Evolutionary Biology (DARWINISM) with John McCormack - podcast episode cover

Evolutionary Biology (DARWINISM) with John McCormack

Apr 10, 20181 hr 1 minEp. 28
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Episode description

Celebrate your lucky mutations with an episode about natural selection, agonizing boat trips, redemption stories, olde timey inter-family marriages, how much money you can make playing videos games, finch beaks, whether or not cave men are kinda hot and how to live on a small island with your soulmate. Evolutionary biologist and the director of the Moore Lab of Zoology, John McCormack, chats about all things evolution and gives Alie a new appreciation for how genetic blips can be hidden strengths.Moore Lab of ZoologyFollow John's work @MLZbirds on Twitter and InstagramMore episode sources & linksSupport Ologies on Patreon for as little as a buck a monthOlogiesMerch.com has hats, shirts, pins, totes!Follow @Ologies on Twitter and InstagramFollow @AlieWard on Twitter and InstagramSound editing by Steven Ray MorrisMusic by Nick Thorburn
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Transcript

Speaker 1

Hi, it's your eccentric but quiet neighbor Ali Ward. Hey, how did you get here? Why don't we have flippers? He is a fly, my cousin?

Speaker 2

What is life?

Speaker 1

Welcome to Evolutionary Biology. Now this is a special episode because frankly, I thought it was lost to extinction. I

thought it was plum deed. I recorded it with an evolutionary biologist who works at the same lab at Occidental College as our ornithologist from a few episodes back so late last year, before I had better microphones or necessarily a good interview rhythm down, I visited with this evolutionary biologist and before the tape rolled, we talked about birds and our upcoming holiday plans, and then we sat down

to chat about natural selection. And then I lost the file for like a lot of months, and I found it on a drive recently, and oh, oh so exciting. It was like encountering a Dodo bird in a PF Chinks parking lot. I was estatic. Another thing that's exciting. Your support. Thank you to everyone funding the production of this podcast on Patreon dot com slash ologies. It's run completely independently, and your pledges for as Lila as twenty

five cents an episode. Totally keep it going. I'm able to pay an amazing editor What's Up Steven to cut it all up and put it back together. You can also support just by getting some sweet sweet Ologies merch. Get a shirt for twenty bucks on ologiesmerch dot com in whatever color you want. Or you can support for free, no money, just by telling a friend. Or you can tweet about it or subscribe on iTunes.

Speaker 2

Are you subscribed?

Speaker 1

Go check? Sometimes Apple just unsubscribes me from things. And it also helps so much to rate or to leave a review for the podcast. This week, Ologies was number twenty in science podcasts on iTunes. Sure we had some ghost podcasts to beat, but number twenty is thrilling as hell for an indie podcasts. So I creep all your reviews. I read them all. I read every single one of them. This one was really kind. Big zo Zoo says, you are the podcast I'd want to buy a drink for

in a classy bar. The music is low, the mood is right. I buy you the top shelf beverage of your choice, and then you delight me with the most interesting facts my brain could possibly absorb with gin. Thanks for rocking mapod socks on the rocks. Well, you're welcome, Big Zazoo. I'm trying to think what drink I would order top shelf at a classy bar, and I'm like, do they have wine spritzers?

Speaker 3

No?

Speaker 2

I don't know.

Speaker 1

Okay, evolutionary biology, in this episode you're gonna pick up some sweetest definitions like taxonomy, what is it, epigenetics, genetic drift, bilogyny, what is all this mouth salad? And you'll learn about some crowd sourced cancer fixers, some super erotic whales, some finch gossip relationship goals, and about how Charles Darwin had a wonderful but super shitty but also wonderful life that involved probably a lot of bad toilet experiences and a

lust for a family member who was it. So please enjoy this chat that essentially boils down to our mutations are our strengths and adaptability.

Speaker 2

Is a virtue.

Speaker 1

Meet evolutionary biologist John McCormick.

Speaker 2

Okay, no, that works.

Speaker 1

So are you and by trade, are you an evolutionary biologist?

Speaker 4

Yes, that's kind of wear a couple of different hats. I'd say evolutionary biologist is probab Probably the broadest one. Sometimes I consider myself an ornithologist as well, I should hope so as the curator of a bird collection.

Speaker 1

So do you would you say that you have like genus and species on the brain a lot?

Speaker 4

Oh, yeah, h yeah, all the time, because that's a lot of what we do here with a with a specimen collection, just you know, naming the basic units of biodiversity.

Speaker 1

Do you remember as a kid in class learning the like, what was it, King Philip?

Speaker 5

What is the Yeah?

Speaker 1

What is it again?

Speaker 5

Well, I can't remember it.

Speaker 1

Let's talk taxonomy, which is how science organizes things. So you may have learned that plants and fungi and animals are classified into domain, kingdom, class, order, family, genus, and species. And you're like, wow, Alli, that is amazing. How did you memorize that you were a genius? And I know that's what you're thinking now. The mnemonic device is clutch here. I never remember the new device for this. I remember we learned one. I think it was like, dear King

Philip came over from Germany. Comma, So, which is weird? Who ends? What's the so about? What's the rest of the story? Anyway, I never remembered it. Dear King Philip came over for grape soda is another way to remember kingdom, class, order, family, genus, species. Another alternative you could use is dickish Ken poured coffee on Fran's good shirt, fuck off Ken, or dang kinky people come over for group sex, which is apparently what

some biology teachers use. They're like, they know marketing, they know how to get your attention. Don't kick people coming from Goldman Sachs is another alternative, depending on how your thoughts about it. So calling an organism or a specimen by its genus and species, it's kind of like saying your last name first. But it's what we call linean taxonomy. Even though Swedish ecologist Carl Linius he didn't really invent it.

Someone else did. It was kind of already established. So John wasn't busy learning Carl Lineus pneumonic memory devices in high school, but he was down with a different Carl, Carl Sagan, who, despite being an astronomer and a cosmologist, he wrote about evolution.

Speaker 2

We sometimes represent evolution as the ever branching ramifications of some original trunk, each branch pruned and clipped by natural selection.

Speaker 1

Sagan has an eight minute animated video that essentially details the journey from a single celled animal to a poll up on the seafloor, to humans, jowless fishy ancestors, to an amphibian to a shrew, to primates to apes, branching off into bipedal creatures with big brains. The poke stuff and will eventually invent things like game shows and salad spinners human beanks. I added that last part because I'm writing this in bed. Honestly, evolution and humanity are kind

of freaking me out. It's like nothing matters, but everything matters, everything changes. We're all mutable. How did I get here? Think of all the people that had to mate in order for me to be alive? Right now?

Speaker 2

What have I even done with my day?

Speaker 1

Anyway? What is it about the linean system of taxonomy that you dig well?

Speaker 4

I've always been an organizer and a list maker, and so it always appealed to me. You know, when I found out about it, it was a lot of taxonomy. Is lists an organization?

Speaker 1

I like that in your regular life, your day to day life, are you as organized as you are as a scientist, or is your house just like a disaster and you're not sure, like you don't have a Christmas list?

Speaker 2

Isn't ready?

Speaker 4

Like yeah, well, unfortunately, that's kind of the plight I think of the academic is to be extremely busy and wearing a lot of hats. And I'm certainly not as organized as I would like to be.

Speaker 2

It's a difficult admission for you.

Speaker 5

A little bit.

Speaker 4

Yeah, you know, I guess I'm still i'd say fairly organized about my things. But yeah, in terms of just general life and scheduling and things like that, it's a bit of the disaster you might expect from an academic.

Speaker 1

And so tell me a little bit about when you first kind of grasped the concept of evolution. When did you start to realize, okay, mutations are responsible for a lot of these different appearances and behavior and capabilities of animals. Like when did you start to get excited about evolution?

Speaker 4

I think it was when I was doing some of those early readings in high school. You know, I know there are other people that have spoken at more length about evolution than Carl Sagan, who was principally an astronomer or cosmologist, and but it was some of his books, the delve Moore into evolutionary ideas that got me into it.

Speaker 1

From there, John studied at University of Arizona and he took class by doctor Nancy Moran, who I looked her up. She is a badass and a MacArthur fellow. She researches the gut biome of aphids.

Speaker 4

And it was really there for the first time that I learned just kind of the basic framework of evolution and its processes mutation, natural selection, and then some things I'd never heard of, like genetic drift, which is the sort of random way that evolution can can take gene frequencies and populations, and that there were whole aspects of it I hadn't heard of. That was pretty exciting too.

Speaker 1

What's an example of genetic drift? How do you describe that at a cocktail party to someone who's half a glass of chardonnay.

Speaker 4

In Well, I guess I'd point to the eminem bowl and I'd say.

Speaker 1

Uh, okay, so see that eminem bowl. Genetic drift is when.

Speaker 4

You take a small handful of Eminem's and you end up with three green ones instead of the full, you know, rainbow of colors. That's genetic drift, and that's what can happen in populations. Sometimes generation to generation, you don't always get a random draw of the genes that are out there. Sometimes you get a very non representative draw, and that can have a big influence on evolution.

Speaker 1

And I.

Speaker 4

Kind of like the idea that there's that sort of chance element in there too, as well as kind of the more what we call deterministic or kind of the more predictable outcomes of natural selection.

Speaker 1

Are there any movies or TV shows about evolution that you either really like or they really annoy you, Like, that's not evolution.

Speaker 5

That's a great question. You know.

Speaker 4

Gatica comes to mind as one that's actually a fairly interesting and informed movie with evolutionary ideas. It's been long enough since I've seen it that I can't really tell you that much, but you know, the ideas of what can happen with genetic engineering and kind of our more consumer based eugenics that we have now are kind of, you know, enhancing our genes because we want to, and some of the outcomes pretty interesting.

Speaker 1

How do you I did talk about Gatica in the Paleontology episode about how I always really respected that they only used at GC no at gc whatever to make the name right, that's pretty dope. How do you feel about crisper and gene editing?

Speaker 4

On the one hand, it's incredibly exciting. I mean, I think people tend to focus in on the aspects of it that involve genetic engineering and humans, and that is one avenue that obviously a lot of caution needs to be taken. But there's so many other applications of crisper technology just to the study of evolution that it's really quite exciting. I mean, the possibilities for experimental evolution are vast and that's great.

Speaker 1

So what is it about birds that make them prime for studying evolutionary biology?

Speaker 2

Why birds? Well, people freaking love birds.

Speaker 1

There have been a lot of them observed, described, collected, so there's a good base of knowledge there as opposed to like slime molds, which nobody goes to hunt down and marvel at. Probably a few people do, and I hope they're friends with each other. But anyway, birds and.

Speaker 4

The starting place for a lot of that is what is the evolutionary tree of relationships? Just knowing who is related to whom is an important starting point and if you don't have that then that's kind of your first step. And so with birds, they've been worked out well enough that that first step is kind of already completed and you can sort of jump to answering some of the the broader questions.

Speaker 1

Because you know the characters in the storyct exactly right. Let's take a quick Darwin detour. Who was he? Why should you care? I'm gonna run this down as quick as I can for you. So. Charles Robert Darwin was born in England in the early eighteen hundreds. His father was a super rich doctor, and Darwin tried to go to medical school.

Speaker 2

But he hated it. He hated it.

Speaker 1

He was also the grandson of prominent abolitionists, which is school. And he loved nature and geology. He loved collecting beetles. God, he loved it. His dad was like, kiddo, you're a loser, and Darwin's like, Dad, can I just go on this boat, the HMS Beagle and travel the world and I'll write about it?

Speaker 2

Will you please finance it? Rich dad?

Speaker 1

And his dad reluctantly agreed, but at one point said to him, you're married for this quote. You care for nothing but shooting dogs and rat catching, and you will be a disgrace to yourself and all your family. But haha, jokes on you, Pop, He wasn't a disgrace to his

whole family. Chris Charles Darwin married his cousin. Oh yeah. Apparently, when he was considering taking on a cousin bride, he was so accustomed to filling notebooks with thoughts on various specimens and animal breeding and stuff that he scrawled out a page with one column headed Mary and another not Mary. Now. Advantages of marriage included quote constant companion and friend in old age better than a dog. Anyhow, Well, I don't know if I agree with that. Cons were less money

for books and terrible loss of time. So constant companion, friend and old age better than a dog, or less money for books and a terrible loss of time. Hm hm.

Speaker 2

He decided to make this.

Speaker 1

Family affair into a family affair, and he had.

Speaker 2

Several babies with his cousin.

Speaker 1

Back to the Beagle, Charles Darwin did a bunch of writing, kind of like travel blogging, but with more dysentery and smeared ink, and his diaries were made into a popular book, The Voyage of the Beagle. It was on these travels that he started to come up with a theory of evolution, but it took him years of tankering and rewriting an illness which may or may not have been shagas disease

from a parasite on something called an assassin bug. And he was also a little thwarted by I think procrastination. But finally he published his on the Origin of species his book in eighteen fifty nine. It was a huge deal. He also kind of published it alongside a contemporary of his, Alfred Wallace. Now Alfred Wallace never heard of him before I started researching this episode. He was working on a super similar theory, but he had a harder and more

impoverished life than Darwin. Like Wallace's ship full of work sank to the ocean floor. He was a drift at sea on a lifeboat, Alfred Wallace, who no one ended up caring about. But back to Darwin on the beagle trip, so Darwin stopped for supplies in the Galapagos Islands off the coasts of South America, and he noticed that different animals on different islands had slightly different features. For example, all those finches, why do they have different beak shapes?

They got crushing bills, they got probing bills, they got grasping bills.

Speaker 2

What are these bills?

Speaker 1

Ah? They must be adapted for different food sources on each little, tiny island climate. So he theorized, were you really inspired by Darwin's finches? Was that a big deal for you at some point where the kind of evolution natural selection and birds and specialization of beaks and colors? Did that inspire you a lot?

Speaker 5

Absolutely?

Speaker 4

Because you know, it's just it's such a great because it's kind of the complete package in terms of evolution happening on a short timescale that humans can observe. It's happening in sort of a contained environment that you can wrap your mind around. Right this island where Peter and Rosemary Grant studied the finches. You know, you could walk around it in an hour.

Speaker 1

I did not know who Peter and Rosemary Grant were. Oh man, oh god, oh man. Okay, if you've been in morning since Branjelina split, have I got a couple for you?

Speaker 2

Boy? Howdy?

Speaker 1

What sexy motherfuckers? Now? Born In nineteen thirty six, this British evolutionary biologist couple went to Daphne Major, Galapagos island and they've been studying the finches there since nineteen seventy three. They lived together on a remote island half the year and our Princeton professors the other half.

Speaker 2

Who are these.

Speaker 1

Sensual lovers, Well, they met when Rosemary was lecturing in embryology and genetics. Peter was still a zoology grad student and her teaching assistant. But they've been married like fifty six years and they've been capturing, tagging, tracking these finches in the Galapagos, and they've been able to show that natural selection can be observed within even a couple of years. Darwin thought this took eons before you could see natural selection.

They're like, nope, check this out. We figured it out. It can happen super quick. And yes, Rosemary and Peter Grant did produce offspring, two daughters, one of whom I just found and followed it on Instagram. I think she studies psychology and is into making cakes. Have I mentioned I'm creepy. I just I just want to be friends. I just want to be friends. Okay, So back to the finches, and.

Speaker 4

There were maybe you know, a thousand or a couple thousand inches on the island. They could catch them all and have them color banded, and so it's kind of one of those you know, it's almost evolution and a test tube, but the test tube is nature, and then the other aspect about it is just kind of, you know, the romance of field work in a far away island.

There's a great book called The Beak of the Finch that sort of follows the grants and their graduate students on this this decade long chase for uncovering evolution, and that was really inspiring for me because it kind of it dispelled some of the some of the myths of field work, like you know, it's all fun and hanging out on the beach. It's a lot of hard work.

Speaker 1

I imagine, less margaritaes. That's more like bugs in your clothes, that's right.

Speaker 4

And scorching hot sun. But that story, I just think it's so inspirational and it's so easy to grasp, and so that's why I make it a point. Just last week, I have an entire class, two classes in fact, where I walk through the Darwin's Finch exam with my students and my evolution class and kind of give them the whole story.

Speaker 1

How do you feel about people going to the Galapagos as tourists. Does it piss you off?

Speaker 4

No, it doesn't, you know, And I've actually been there myself as a tourist. Any situation where people are out there enjoying nature and to see people making such a long trip at such expense to see nature firsthand and to see the work of evolution, that makes me happy. Now, sure, once you get there, there's always cases that you can look at that make you grumpy. You know, the person with the camera right in the face of the you know,

the seal. But I try to take a broader picture, and I think of how great it is that people can get so excited about biodiversity.

Speaker 1

I once went to an island in Thailand and I saw a tourist tipping back a pepsi into the mouth of a monkey, and I had a hard time with that.

Speaker 2

I was like, we shouldn't We should all go home.

Speaker 1

It's like, this shouldn't be happening.

Speaker 4

There's plenty of ways that you can observe humans interacting stupidly with nature, and right now, with social media, you know, we could just do nothing but watch humans interacting stupidly with nature. And so I mean, it's a concern. Right, it's a problem and people need to be educated. But again, I think, taking a slightly more optimistic sort of broad viewpoint, I'm glad that people are jazzed up about nature.

Speaker 1

Right. Do you ever look at yourself or people in your life and say, way to go, j man. I am the result of a bunch of evolution.

Speaker 4

It is a pretty marvelous thing when you think about it. I tend to not focus so much on humans as the pinnacle of evolution.

Speaker 2

Ouch.

Speaker 1

Yes, okay, reminder, humans not the pinnacle of evolution. You have a point, and I like.

Speaker 4

To look at other situations and marvel over the millions of years of evolution that produce some remarkable radiation of birds, for example. But when you stop to think about it, everything that's alive today is the survivor of essentially three point seven billion years of evolution. All those species, millions and millions of species that are crawling around on this very thin crust of the earth are the products of

that three point seven billion years of evolution. And it's a remarkable thing, you know, in each one, even from a bacteria to a human, has evolved just as much through just as much time. I think It's easy to think about certain species alive today as being more evolved than others because maybe they have a few more adaptations or they look more complex. But at the end of the day, that bacterium and that human were all the products of three point seven billion years of evolution.

Speaker 1

Even if you do nothing but play World of Warcraft and eat from a barrel of cheese puffs, you're still a.

Speaker 4

Winner, right, You are the product of winners. You got here because your ancestors won the evolutionary game. Now what you choose to do with all that winning is another question.

Speaker 1

That's a very diplomatic way of saying, don't just play World of Warcraft cheese puffs? Very diplomatic.

Speaker 4

I'm not into telling people what to do with their lives. But at the end of the day, is about fitness and is about offspring, and so you know, eaten Cheetos in your basement is maybe not going to get you to the finish line.

Speaker 5

There.

Speaker 2

You never know, You never know, you never know, Okay, disclaimer.

Speaker 1

I know nothing about World of Warcraft or how good of a life you can have playing video games in a basement, but I decided to look into it, and this did cause me to stumble upon a cracked article about farming gold, which seems like some sort of earned token you can sell to another player.

Speaker 2

One guy does this seventy two.

Speaker 1

Hours a week and makes about twenty five thousand dollars a year, and he also lives off pizza and Monster Energy drinks.

Speaker 2

So it's possible.

Speaker 1

It is possible you can make a living playing World of Warcraft, and then you can put gold farmer on your business card. Oh what's on John's business card? Is it ornithologist or evolutionary biologist?

Speaker 4

I think I tend to describe myself as an evolutionary biology just who studies birds. But you know I'm an ornithologist as well.

Speaker 1

Own it?

Speaker 5

Yeah, maybe I should own it.

Speaker 1

I should, And besides, you can be both. I'm sitting I'm sitting next to your business cards and it doesn't even say anologist of any kind. It just says director and Curator of the More Lab of Zoology.

Speaker 2

You gotta throw some you gotta throw some title on these.

Speaker 5

Well, Ali, I gotta bring you in for pr.

Speaker 1

Come on, let me life code like zoologist, ornithologists, evolutionary biologists?

Speaker 2

Come on?

Speaker 1

Uh?

Speaker 2

What is?

Speaker 1

Let's let's debunk some flimflam. What is a myth about evolution that you feel like people hang on to other than just creationism?

Speaker 4

Right? So, I think one of the great myths is embodied in that classic symbol of evolution where you see sort of the chimpanzee evolving through something that looks like a Neanderthal into modern humans.

Speaker 1

This linear illustration of primates up to modern humans is called the Road to Homo Sapiens. It's also been called the March of Progress, and it was published in nineteen sixty five in a time life science volume. You've totally

seen it. It has silhouettes of gibbons and then chimps and apes all kind of marching in a line up until you get to these like tanned, muscular Neanderthals, and it's like it's such a good psychological test and trying to figure out how far back in species it becomes inappropriate to wanna smash Like some of them look like shaggy haired rock climber boys with good butts who just need a shower, and you're like, shoot, these are cave people. Check yourself, girl, Okay, So there are so many parodies

of this illustration. I'm sure that if you see it, you almost expect to see the devolving into Homer Simpson or a Martian or something now rather than this linear evolution. Evolution looks more like a tree, as they call it, a tree of life, where one thicker branch represents a common ancestor and then new species kind of branch outward.

So that's called phylogeny. And Darwin sketched it in one of his leagal era notebooks with the words I think scrawled above it, which I think is super adorable and very humble. I have a friend who has this tattoo of this Darwinian tree of life sketch, and I hope Darwin's stodgy father would be proud. Okay, back to that road to Homo sapiens linear evolution illustration and how that's not really how things happen.

Speaker 4

Although it's even used by people who are pro evolution, I think it kind of leaves people with a misimpression of how evolution actually operates, because you know, chimpanzees and humans are each other's closest relatives, and you know, humans didn't evolve from chimpanzees. We evolved from some common ancestor that we shared with chimpanzees, and so that that depiction of evolution is kind of you know, following a linear pattern.

It belies the true branching history of evolution that's underneath. And one of the most common questions you get, and you know, just recently on Twitter, Tim Allen of all people, was going to weigh in on evolution and ask the question you get a lot, which is if humans evolved from apes, why are there still apes?

Speaker 5

Right?

Speaker 4

And again it's embodied in in that symbol that that's not true. We didn't evolve from apes. Gorillas and chimpanzees and us all evolved from a common ancestor that was neither an ape, nor a chimpanzee or a human, but something else.

Speaker 1

Maybe that was just a personal branding question for him, because you did make his mark on the world by grunting, right. I feel like he grunts the lies like shoot, maybe I had to rethink this.

Speaker 5

Well, see he's got good pr people. Maybe he does.

Speaker 1

I saw that and I was like, hell and sit down, just go away. I do have some questions from listeners, and I don't know if they're going to be easy questions. You can you can say pass on any of these, but Before we take questions from you, our beloved listeners, we're going to take a quick break for sponsors of the show. Sponsors.

Speaker 2

Why sponsors?

Speaker 1

You know what they do? They help us give money to different charities every week. So if you want to know where Ologies gives our money, you can go to Aliyward dot com and look for the tab Ologies gives back. There's like one hundred and fifty different charities that we've given to already, with more every single week. So if you need a place to go, donate a little bit

of money but you're not sure where to go. Those are all pick biologists who work in those fields, and this ad break allows us to give a ton of money to them. So thanks for listening and thank sponsors. Okay, your questions. Doctor Tigenwall wants to know what are the best ways to differentiate bad post talk evo bio claims from actual science. Example, banana's evolved to be eaten by humans because we have hands.

Speaker 2

Things like that.

Speaker 4

A lot of the examples of evolution you see written about in the popular press kind of fall into this trap of portraying evolution as though it responds to needs, and sometimes this is just loose shorthand.

Speaker 1

I have heard that people get like a science teacher tell me she hates when when she hears like, oh, this species evolved because it wanted this, or you know what I mean, like a evolved, yeah, out of need instead of out of kind of chance.

Speaker 4

But exactly, yeah, and so right. The recent example was birds that have evolved to feed off of bird feeders in Great Britain. So birds have evolved longer bills to feed off of bird feeders was kind of the headline that you saw, and it kind of gives this impression of evolution that it responds to needs. The birds sort of thought to themselves, Look, you know, I really need a longer bill here, and so let's go for that, you know, let's try to reach that pinnacle of evolution.

And it again, underlying that is the true evolutionary mechanism, which is differential survival and reproduction.

Speaker 1

Differential survival and reproduction just being fancy talk for little variances and genes mean good mutations which help a plant or a bird or a snail thrive and mate in its particular environment. Boom, natural selection. You know.

Speaker 4

The way I would say it would be much longer, it would be something along the lines of birds with longer bills were able to feed more effectively from bird feeders and thereby produce more offspring, which led the population as a whole to have longer bills. Now you can understand why a headline writer isn't going to go there, why I don't have a job as a headline.

Speaker 2

Writer breaking news.

Speaker 1

Birds on the longer bills were able to feed more from bird feeders and thereby produce more offspring, which is what the population as a whole having longer bills.

Speaker 2

It's very wordy.

Speaker 4

But I think there are ways to depict the evolutionary process in headlines in kind of a more effective way.

Speaker 1

Right right, A little bit less sensationalist. How do you feel about Lamarckian theory of acquired genetics that people maybe still kind of believe in it. French biologist Jean Baptiste Lamark, by the way, had a theory of acquired genetics such that offspring would take on the characteristics their parents adopted

in their life. Like, Okay, if a giraffe slowly stretched its neck ever further to try to get leaves, then its babies would have a little bit longer necks, depending on the giraffe's effort, or if your mom was a competitive bodybuilder and you were just destined to be ripped. It turns out not so much. Lamarcky and genetics predated Darwin's theory of evolution, and once Darwin came on the scene, people were like, uh, yeah, by Lamark a revoir? No no,

So how does John feel about Lamarck? And also, did did Lamark get a to get the shafts or are you like he should have never been kind of known?

Speaker 4

Oh, I'm a big believer that Lamark, you know, has been overly villa. I mean, the fact was, Lamar's theory was the first kind of full and coherent theory of evolution that evolved involved a mechanism for how it occurred. No one had really done that before. And so even if he was wrong, he got people talking and he got people thinking, and he got people like Darwin thinking about why he was wrong, and that moved things forward. So yeah, I'm a big fan of Lamark. He did

a lot of things right. He just happened to be wrong about how traits changed and how they were passed down through the generations.

Speaker 3

What about epigenetics, how do you feel about it right, So this is so funny, and my students will laugh when they hear that question, because it just yesterday I went on a long, unannounced rant about epigenetics.

Speaker 5

You know, it's the term.

Speaker 4

Is misapplied these days quite a lot, especially in media accounts. I understand it's a buzzword.

Speaker 1

Super quick primer, So epigenetics is kind of a buzzword these days. Essentially, it refers to when your gene expressions change, not the DNA or the genetic code itself, but just the expression of it changes. So John says it really applies to specific cases where DNA can be silenced by the addition of molecules to something called the histones. Histones are proteins that make up the structure that DNA gets wound around.

Speaker 4

So those molecules can attach and effectively silent certain silence certain parts of the genome. And in some cases it seems that those silencers can be passed down from parents to offspring, and in some cases also that silencing can happen during the lifetime of an organism in response to

its environment. So it's at least theoretically possible, and I think it's been shown in maybe just a few cases where this sort of silencing occurs in the lifetime of an organism and then gets passed down to its offspring. So it is possible that it's a contributor to evolution,

and in a sense it's a Lamarckian right. So Lamarck's theory of acquired characteristics was the idea that traits picked up during your lifetime you can pass down, and so epigenetics in the narrow sense sort of adheres to that idea. How often has that actually contributed to evolution? And also, is this not something that, at the end of the day,

is found in the genetic code. So the silencing and turning off and on of these genes at the hiss Stone level might itself be encoded in the genes, got it?

Speaker 1

So your genes might already be saying, like, hey, turn these things on, turn those guys off, like they might already be on top of it, might be part of the code.

Speaker 4

So but then there's all sorts of ways that people use epigenetics that was already folded into what we know about Darwinian evolution.

Speaker 1

So Darwin was already hipped to it.

Speaker 4

I don't know if Darwin was hip to it, but certainly those people that in the modern synthesis. You know, Darwin didn't know the genetic mechanism of how heredity happened, but after Mendel showed us the genetic component, and then after that was sort of incorporated with Darwin's views and natural selection.

Speaker 1

More listener questions ready, Yeah, okay, I hope these aren't too insane.

Speaker 2

Chasing.

Speaker 1

Katie wants to know. I don't even understand this question. I'm just going to read it. If he works in sequence alignment. I want to know what is the most significant discovery arisen from resolving anomalies in human DNA. I just reread this question again, like seventeen times. I still don't understand it. I looked it up and it seems to involve finding matching sequences within DNA to point to one common ancestor. Does that make sense?

Speaker 4

I think the question is is about how we take multiple sequences from multiple individuals and know that we're looking at the same piece of DNA across individuals. So that's sequence alignment is a very important part of building a tree of evolutionary relationships from DNA data. A lot of times you get pieces of DNA from very different species, and evolution has taken them in such different directions that you almost don't recognize that those pieces of DNA are related.

Speaker 5

To one another.

Speaker 4

Ah, and so it is quite challenging to sort of align it all together and know you're looking at sort of the same base or the same chunk of DNA or the same gene across different species. We have had new computational tools come online that have really vastly improved our ability to do that by I. It used to be you got these chunks of DNA and then you would just look at them on a computer and sort of move them around by I.

Speaker 1

And that sounds terrible.

Speaker 4

It sounds terrible, but actually it's a pretty darn good way of doing it. As it turns out, we've had new computational tools that come online that have allowed us to sort of align DNA across hold genomes in a way that it would take years to do by I. So you can get most of it close to correct.

But then it turns out those really really tough spots to align are actually almost best done by I. Wow, a computer really hasn't figured out how to effectively do that, and in some cases people have used crowdsourcing to do it, so they've put these really complicated chunks of DNA online and then people can go on like a little game and sort of move the bases around and kind of come up with the best explanation for.

Speaker 5

How they should be aligned to each.

Speaker 1

Other, like citizen science projects.

Speaker 5

And yeah, exactly.

Speaker 1

So I looked into this, and there's a game called Filo Phylo. It's put out by the McGill Center for Bioinformatics, and it kind of resembles a linear like brightly colored Tetris with blocks that you try to slide around until they match each other. Each block represents nucleotide sequences of different phylogenetic taxa, so I sucked at first, but I didn't care because it features like jazzy piano background music,

which is hell sweet. And then you can also select which disease you'd like to help cut by matching nucleotide sequences of different phylogenetic taxa. So you can click on the menu like infectious diseases, blood diseases, heart and muscle diseases. It's really it's quite an impressive menu. I chose Brain and nervous system disease, which had kind of a powerful effect because as you're playing, it'll kind of hit you that maybe you're helping researchers find out more about, say

my mom's disease, multiple sclerosis. Maybe by playing this video game, I'm helping out. So I looked at a video and an earlier version of Filo used a graphic in the lower corner to represent your score, and it was silhouettes from the Road to Homo Sapiens aka the March of Progress illustration we talked about earlier, So it looks like they've since changed that, which is good because having these

chromagnet hotties in the corner super distracting. Just kidding. So if you need a break from gold farming on World of Warcraft, you might want to hop over to Filo and just play a couple of rounds. Full disclosure, I did eat Cheetos like yesterday, so no judgment on that. Life Moving on, Dustin Growick wants to know what are your favorite evolutionary anachronisms.

Speaker 4

You might be talking about, like structures like holdovers, evolutionary holdovers.

Speaker 5

That don't have a Oh okay, so that.

Speaker 4

Don't have a use anymore. I mean the hip bones, the tiny hip bones of modern whale are a great evolutionary anachronism because they really.

Speaker 5

Speak to the.

Speaker 4

Fact that special creation. If you believe that each species is created perfect for its particular niche on Earth, why would modern whales have tiny hip bones unless there's something in their evolutionary past that points to the fact that they were once land animals.

Speaker 1

I've never known that. That makes me want to go look at whales eletants now, like, oh, whales, you don't need that.

Speaker 5

Yeah, why are you carrying that ad?

Speaker 1

It's overpacking? So whales quick aside, I have to Okay, we all know whales.

Speaker 2

They live in the sea.

Speaker 1

Okay, whales started in the sea, and then they lived on land as freakish, hairy walking whales, and then they slipped back into the sea like your drunk friend on spring break who disappears from playing cards against Humanity to go sit in the hot tub and nursa corona alone. So, wales, you're in the sea. Why do you have hip bones? You don't need them. I looked it up, and whale hips may not be a hiccup of some ancestral relic, so the explanation may in fact be much more as

one National Geographic article puts it erotic. That's right. Whales be thrust in. They need those hip bones for boners. And because lady whales like sweet moves, maybe, and there's a lot of competition out there, so sexual selection whales grinding like two tractor trailer mac trucks made out of wet blue leather. Just slow, bone in it out, Gotta love love. Celestia wants to know are there any species that we can see current evolving happening in order to adapt to our modern world?

Speaker 4

Viruses, Oh, viruses are constantly evolving to humans. And the flu virus that's hitting us in one flu season is going to be you know, yesterday's news. Next year, there's going to be a flu virus two point zero, And that's evolution that you can see over the course of generations, just a couple of years. Even another great example is

antibiotic resistance. That's another scary one, and sometimes people don't necessarily file that under evolution, but they should because it's a direct result of natural selection pressures that we are placing on bacteria through our overuse of antibiotics. The reason we're getting these superbugs is because of evolution.

Speaker 1

Do you ever worry about humans interference with evolution? Chigile, Since you study birds, do you ever worry like, ugh, we're cutting down so many trees, what are we doing to the birds? Or do you feel like, well, evolution is evolution and that's another thing to adapt to.

Speaker 4

I guess I like to see evolution kind of proceeding through its natural course, sort of unfettered to the extent possible by humans. But that's not to say. You know, we live here in Los Angeles, and you can't turn a blind eye to the fact that we've got a big city here and it's not going anywhere. And so if you're going to be studying urban wildlife, you're going to be studying evolution altered by humans.

Speaker 5

You know.

Speaker 4

I'm not against that either. I think there's a lot of interesting things that we can study about evolution in human altered landscapes.

Speaker 1

It's a good attitude to have that you're not because part of me, as if I were an evolutionary biologist, would spend some time under the couch crying about how we've messed up everything. And right, you've got a better attitude than I do.

Speaker 4

Well, I mean, and it's probably because I've gone through all the stages, right, I mean, I've been there where I've learned about all the amazing biodiversity on the Hawaiian Islands that we've lost by introducing mosquitoes and all kinds of other things, and so I've kind of gone through the despair and the stages of grief.

Speaker 2

Yeah, listen to the pantatology episode.

Speaker 5

That's right, that's right.

Speaker 4

And at some point you've just you know, especially if you're you're teaching the next generation, you just you've got to be a little optimistic.

Speaker 1

Right, that's good. That's responsible of your pilot. Stig wants to know, what do you say when some ass face rants evolution is just a theory?

Speaker 4

Well, yeah, evolution is just a theory. Well, you'd like to think that you approach that person by telling them and sort of informing them what a theory is in science.

Speaker 5

You know, it's.

Speaker 4

An idea that's backed up by a lot of facts.

Speaker 1

Sickburn. Right, Just a reminder that the scientific method does not place theory in the bumbling beginnings of an experiment. Rather, theory is the product of a tested hypothesis. So it goes roughly, you got a question, you come up with a hypothesis, experiment analysis. Finally you come to the theory or a conclusion, so you can think of it like Queen Hildegarde eats, aple, turnovers, question, hypothesis, experiment analysis, theory, something or something filthy er if you want.

Speaker 2

I don't know.

Speaker 1

I'm just trying to help you, guys, just trying to help. But yes, theory of evolution isn't just a hair brained theory.

Speaker 4

Honestly, I've never encountered that, like face to face someone telling the evolution is just a theory.

Speaker 1

Good.

Speaker 4

I've encountered other misconceptions of evolution, like the if we evolve from apes, why are they're still apes? Or if we evolve from monkeys, why are they're still monkeys? And actually, in that case, I've found you know, that kind of a question I think speaks more to two people's just you know, haven't been exposed to ideas. I've gotten that question earnestly from people, and I found that if you just sit down, you know, with a cocktail napkin, and you sketch it out for them and you say, look,

evolution is not linear. It proceeds through branching, and we're related through ancestors. I've found that that has changed some minds, and some of my students have actually come back to tell me that they've found that that changed minds too. Someone who's coming at you with evolution is just a theory, you know. I found that those people are usually just kind of more entrenched and in ideologies and unlikely to change their minds.

Speaker 1

So their trolls kind of I imagine. I think it's a little.

Speaker 5

Troll like, don't don't feed the trolls.

Speaker 1

Yeah, this is my own theory. Tell me what you think about this. Okay, When I think about cars, I always get kind of caught up on the taxonomy of them because I do feel like like make and model is very genus and species right, and then over years the same species can maybe evolve and maybe they all have certain common ancestors. Maybe there's like an evolution like

divergent evolution. Is it do you think that we created our automotive system with kind of headlights in the front, engine in the front, exhaust in the back, four wheels, quadruped to model animals at all? Or is that Does it just sound like I smoked much weed, which I don't.

Speaker 4

I think what it sounds like. And what I think you've clued into there is the fact that in a lot of human created structures we can see sort of a history of how they've been designed, and so you know, evolution is not something that's just confined to the biological world.

People use evolutionary theories to study language because there's all sorts of quirky ways that languages evolve through some of the same processes of selection and random ways like drift, and we can reconstruct histories of how the things we see now are related to one another. You can do the same thing with shoes, with cars, with candy bars. And what it's saying is not so much about whether there's a designer behind it as there is with a car, or the lack of a designer in the case of

the biological world. What it's saying is things usually evolve through a history and through having ancestors, and anytime something goes through time like that, it sort of leaves a record of evidence of who shares a more recent common ancestor, And so you can see that in cars, you can see that in shoes. It's just in that case humans are the designer.

Speaker 1

But need is ultimately the designer, right, I mean it's based on how well it adapts to the environment. Like I feel like hummers kind of went extinct because the environment no longer had a cheap gas or that kind of ostentatious displays of wealth. But so do you think about that ever, about how things kind of work themselves out based on what resources are available.

Speaker 4

Yeah, And you know, this kind of gets into two theories that sort of compare the marketplace to evolutionary ideas. I think there's something to be said for that. And you know, sometimes that's called evonomics. You know, there's branches of economics that sort of focus on evolutionary ideas. I'm not an expert on those, but I think there is some credence to the idea that you know, products sometimes, you know, they're selected for or against, and sometimes the

ones that don't get selected die out. Now, sometimes the ones that are terrible products continued to be perpetuated.

Speaker 2

That's a very good point.

Speaker 1

I tried to look into this further and I found a website called economics, which touts itself as the next evolution of economics. And I can't quite vouch for it, because I clicked around and I found an article titled is there anything that working less doesn't solve?

Speaker 2

But I only read.

Speaker 1

First few paragraphs because I had to get back to work, because whale sex facts don't research themselves. Speaking of work, now, what is your least favorite thing about your job or at time in the field that was awful or something that you just is like, maybe not the highlight?

Speaker 2

And then I'll ask you your favorite.

Speaker 4

Well, and on a good note, even the worst field experience is always better than answering emails. And I'm sorry for those people. You know, I will get to your email sometime soon, I promise.

Speaker 5

You know. The fact is, and this goes.

Speaker 4

For a lot of jobs, but I think it's especially true of field biologists. We got into this job because we love to study animals in nature, and I still get a lot of wonderful opportunities to do that. Don't get me, You're wrong, But they never tell you that you end up spending you know, a good thirty percent of your time sitting at your desk answering emails or filling out forms. And so yeah, those are the worst

aspects of my job. Not that I don't enjoy communicating with people, but boy, i'd rather be you know, talking over a beer than answering in an email.

Speaker 1

Right, or having a stomach parasite in a jungle preferable to email.

Speaker 5

Yes, absolutely, absolutely.

Speaker 1

Now, what has been your favorite moment, say, out in the field on an expedition, Like, have you ever had a moment where it's just like.

Speaker 4

H The moments when you can take people out to an incredible field site, people who are either just getting excited about science and biology or birds, and you can take them to a place that you've been to that's just way out there and is just incredible. Those are the moments I live for. So we got a chance to do that recently when we went up into the mountains of northern Baja. There's a mountain range called the Sierra San Pedro Martyr and it has basically been untouched

by human habitation anyways, in modern times. There's still cattle that they run up there, but nobody really lives up there, and you almost don't see any place like that in

the United States. So this is a place people don't really realize this, but there's a huge number of California condors up there, and so we had the opportunity to go up there and just taking some of the expedition members and a student from Occidental College and giving them the opportunity to see this place and see these condors up close.

Speaker 5

I mean it was It's spectacular.

Speaker 2

Oh, super quick.

Speaker 1

Condor is a type of vulture and it's inky, black and huge, and it was on the brink of death but as being bred in captivity and released and it eats dead things and it doesn't have a song, It just grunts sometimes. And since I was in an ornithology lab, I had one more very important scientific question from someone who happens to be having a birthday this week.

Speaker 2

My friend Dyalen.

Speaker 1

Rodriguez has a question about condors. She wants to know are they the most goth of all the births.

Speaker 4

I don't know, because I think I mean they're pretty goth, I mean with that with the shaved head, yeah, sort of, the you know, and especially a lot of vultures kind of have the grays and the black hues to their feathers. But I mean, does it get more goth than a vampire finch?

Speaker 1

I suppose not.

Speaker 4

And that's one of the Darwin's finches their main food source. They fly and they peck the backs of the these poor boobies birds called boobies until they draw blood and then they eat the blood. So I don't know. Yeah, condors are goth, but hard to compete with the vampire finch.

Speaker 1

The only way to do it is have a dance off. Someone's got to play bowhouse. They've got to have a dance off. All right, well, you have a new goal in terms of evolutionary biology. Thank you for entertaining these questions.

Speaker 5

Absolutely.

Speaker 1

To learn more about John McCormick's work, you can follow on Instagram at m l Z Birds, which is the account for the more Lab of Zoology at Occidental College. You can follow me at Ali Ward with one O on Instagram or Twitter and at Ologies on Instagram. We're also on Twitter, and to rock a sweet ology shirt or a pin or a canvas tote, you can head two Ologies merch dot com. And thank you Bonnie Dutch and Shannon Feltis for all of your help with that.

Thanks as always to Stephen Ray Morris for piecing this together from an insanely highlighted transcript, and thank you Aaron Talbert and Hannahlippo for adminting the Ologies podcast Facebook group, which is full of a bunch of really high quality, awesome people. Special thanks this week to ologite Alex Anderson and any listeners who weighed in on gender and identity matters following last week's gynecology episode. I learned so much and I loved hearing what you all had to say

and what your experiences were. Alex was super cool, and we jumped on the phone and chatted about it for a while, and I included a new intro at the very tip top of that episode in case you want to go back and listen you might learn some more stuff. And thanks especially to all patrons who fund the podcast so I can pay Steven and buy equipment and pay for hosting and buy memory cards and batteries and stupid

stuff that's also fun. You can join the Patreon party at patreon dot com slash ologies, and that also lets you know what episodes are coming up, so you could submit questions to the ologists, and I try to ask them all. I sometimes don't get through all of them. Just keep asking. The theme music was written and performed by Nick Thorburn of the band Islands, and there are always more links about the episode up at Aliward dot com slash ologies, So if you want more research, just

head there and as always you go. I tell a secret at the end of the episode as a thanks for sticking through the credits. In today's secret, It's another snack secret. I was going through my laundry and at the bottom of my laundry I found a purse I haven't used in a while, and I looked in it. There was one piece of like a chocolate coin iconic a gut in my purse and I was like, oh sweet, And there was some lint on some of it, but

I peeled that off and I ate it. I ate it so what it was in there, people have eaten a lot worse things. And I thought, man, it's April now, that had to be from Hanagah. That must have been in December. And then I was like, oh well, But then I realized, y'all, it was just from February. When I went up to Portland. I just remembered that I got a chocolate cover coin up there from the dinner with Cole and Perry and Shannon felt as in Body Dutch.

It was still in my purse, and I was really proud of myself that the chocolate that I ate was only a month and a half fault instead of being three or four months old. But sometimes you find chocolate in your apartment, you gotta eat it. So what, still alive? Guys, still alive. Not going anywhere quite yet anyway, Bye Bye, Pacaderman College. Hommeiology, crypto zoology, lithology, Yeah, minology, meteorology, fatology, anthology, ceiology, filology,

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