The Species That Broke Evolution?
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- Опубликовано: 11 сен 2024
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The ancestors of gars, horseshoe crabs and coelacanths looked almost the same as their modern relatives. Darwin called species like these “living fossils'' because they seem like they are evolutionarily frozen in time. But Darwin was wrong.
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To learn more about this topic, start your googling with these keywords:
- Stabilomorph: A species that retains a stable form over millions of years.
- Molecular Evolutionary Rate: The frequency with which DNA or protein sequences are fixed in a population.
- Ship of Theseus Paradox: A philosophical thought experiment that asks if an object is still the same if all of its original components are replaced over time.
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CREDITS
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David Goldenberg | Script Writer, Narrator and Director
Lizah van der Aart | Illustration, Video Editing and Animation
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REFERENCES
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Kin, A., & Błażejowski, B. (2014). The horseshoe crab of the genus Limulus: living fossil or stabilomorph?. PloS one, 9(9), e108036. doi.org/10.137...
Brownstein, C. D., et al. (2024). The genomic signatures of evolutionary stasis. Evolution; international journal of organic evolution, 78(5), 821-834. doi.org/10.109...
Amemiya, C. T., et al. (2013). The African coelacanth genome provides insights into tetrapod evolution. Nature, 496(7445), 311-316. doi.org/10.103...
Casane, D., & Laurenti, P. (2013). Why coelacanths are not 'living fossils': a review of molecular and morphological data. BioEssays : news and reviews in molecular, cellular and developmental biology, 35(4), 332-338. doi.org/10.100...
Alberts B, Johnson A, Lewis J, et al. Molecular Biology of the Cell. 4th edition. New York: Garland Science; 2002. How Genomes Evolve. Retrieved from: www.ncbi.nlm.n...
Dresow, M. (2023). Re-thinking Living Fossils, Again. ExtinctBlog. Retrieved from: www.extinctblo...
Romeo, J. (2020). The Horseshoe Crab: Same As It Ever Was? `JSTOR. daily.jstor.or...
Black, R. (2014). Evolution in the slow lane. National Geographic. www.nationalge...
Shear, W, Werth, A. (2014). The Evolutionary Truth About Living Fossils. American Scientist. www.americansc...
Gar: Nothing wrong with taking your time with something
Tuatara: COOOCAAAAAINNNEEE
This is so funny I'm gonna like it even though I don't understand
The tuatara evolves fast and the gar evolves slow, but we don’t understand why the tuatara evolves so it’s as if the tuataras’ evolution is on drugs I think
“Been here since uhhhh… millions of years ago? I forgor.” - random old tuatara
Can't like, must keep at 420...
made me think of huggbees explaining snowflame
If it ain't broke, don't fix it: Shout-out to all my blue blooded creatures.
Where are you going after you die?
What happens next? Have you ever thought about that?
Repent today and give your life to Jesus Christ to obtain eternal salvation. Tomorrow may be too late my brethen😢.
Hebrews 9:27 says "And as it is appointed unto man once to die, but after that the judgement
@@idehenebenezer I’ll go to a graveyard
@@idehenebenezer im turning into a horseshoe crab and reach perfection
@@idehenebenezer Have you considered that maybe your book of fairy tales is actually a book of bullshit? Is Moby Dick a true story because someone wrote a book about it?
bic pen:
When I catch the horseshoe crab in Animal Crossing: New Horizons, I thought about how it managed to stay the same for millions of years. It’s impressive.
Revelation 3:20
Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me.
HEY THERE 🤗 JESUS IS CALLING YOU TODAY. Turn away from your sins, confess, forsake them and live the victorious life. God bless.
Revelation 22:12-14
And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be.
I am Alpha and Omega, the beginning and the end, the first and the last.
Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city.
@@idehenebenezer can jesus give me free alcohol (he turns water into wine)
Can Jesus turn the water in my body into wine? Thanks
@@ryanr27
@arandom_bwplayeralt
*John 4:10*
Jesus answered and said unto her, If thou knewest the gift of God, and who it is that saith to thee, Give me to drink; thou wouldest have asked of him, and he would have given thee living water.
*John 4:13-14"
Jesus answered and said unto her, Whosoever drinketh of this water shall thirst again:
But whosoever drinketh of the water that I shall give him shall never thirst; but the water that I shall give him shall be in him a well of water springing up into everlasting life.
****
Hey there, Jesus is calling you today. Come to him, repent from your sins, bear his cross and live the victorious life.
Romans 10:9-13
That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
For the scripture saith, Whosoever believeth on him shall not be ashamed.
For there is no difference between the Jew and the Greek: for the same Lord over all is rich unto all that call upon him.
For whosoever shall call upon the name of the Lord shall be saved.
Hebrews 12:14
Follow peace with all men, and holiness, without which no man shall see the Lord:
@@idehenebenezerif he’s real then can he win a round of fortnite
Fun fact sort of related to the video:
The longest lasting species I'm aware of is Grypania spiralis, which existed for around 1.2 billion years. Yes, that's one single species. Not a clade. Not a genus. A single species.
Colossians 3.
1. If ye then be risen with Christ, seek those things which are above where Christ sitteth on the right hand of God.
2. Set your affection on the things which are above and not on things which are on the earth.
3. For ye are dead and your life is hid with Christ in God.
4. When Christ, which is our life shall appear, so shall ye also appear with him in Glory.
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Jesus is calling you today. Come to him, repent from your sins, bear his cross and live the victorious life
********
@@idehenebenezer How about I worship Satan and live my life well now because everything else is a shaky bet and a loose wish. Lets go get hammered and do drugs my guy. Hail Satan.
There's a nuance though. With how little is left of them, and hence is known about them, it's not certain they're a single species. Or even a complete organism at all?
@@BuranStrannik I mean, I haven't seen anyone suggest that they're part of a larger organism, and it probably wouldn't make sense if they were. They're essentially just long, coiled filaments, which is a pretty normal morphology, all things considered.
Some have considered some of the earlier forms to be potentially different to later forms (Neoproterozoic fossils from the Franklin Mountains,
northwestern Canada: stratigraphic and palaeobiological
implications) though, with them being suggested to be composites. (The paper 'Eukaryotic organisms in Proterozoic oceans' did disagree with that conclusion, however, and the paper 'The long-ranging macroalga Grypania spiralis from the Ediacaran Doushantuo Formation, Guizhou, South China' states that the species had undergone little change in morphology throughout it's existence).
@@idehenebenezerso we shouldn’t research about the animals on our planet?
Tuatara: I've taken a controversial pill that accelerates my evolution
Mammal: So you're really advanced now?
Tuatara: I'm primitive FASTER
Jesus loves you. Repent and turn away from your sins today 🤗
@@idehenebenezer no
@@idehenebenezer Hail Satan.
@@brenthud2170 amen
Fittest doesnt mean most complex. There's a reason overengineering causes all sorts of problems in machinery.
Evolution isn't going for some sort of predetermined end goal. Heck, it isn't even going for perfection.
Evolution basically goes for "eh, good enough".
That too good for that particular time.
If it ain't broke, don't fix it...
It should have just been called change rather then evolution the name is really confusing
@@luisfilipe2023 evolution just means "gradual change", not "becoming more advanced"...
Evolution is the C++ of nature; just patchjobs upon patchjobs.
It think it is still fair to call these species living fossils, because by Darwin's definition (as paraphrased in the video at 00:19), they are species "seem" like they are frozen in time. I don't think the term is meant to imply they are frozen in time and have not mutated at all. Just that they seem that way.
that´s logic i can get behinde
But that's what most people take it to mean.
@@jaredf6205 Revelation 3:20
Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me.
HEY THERE 🤗 JESUS IS CALLING YOU TODAY. Turn away from your sins, confess, forsake them and live the victorious life. God bless.
Revelation 22:12-14
And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be.
I am Alpha and Omega, the beginning and the end, the first and the last.
Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city.
Yeah, saying Darwin is wrong (on the existence of what us and hin casually calla Living Fossil) is dumb clickbait.
I mean, it worked... but still annoying
@@gregoryfenn1462 It can't be clickbait cos they didn't put that in the title or the thumbnail. It was in the middle of the video - by that point you'd already clicked and were watching the video.
I've asked about this, and it makes sense. Natural selection favors the ideal vehicle for the environment. If that environment doesn't change, neither will the species. Your environment includes predation, food-sources, temperature etc. Still amazing to think their environment hasn't changed in such a long time.
This should be higher up. I think the absence of environmental pressure contributes a lot to a species not changing. I don't think this is mentioned in the video.
100MY does include the KT extinctione event, so the environment would have gone through some significant changes especially in terms of other animals in the system.
“Are you evolving?”
Gars: “Yeah, but slowly”
slooooooooowly
Is it ok if I make a random bfdi reference?
@@MinuteEarthReal
0:40 just learnt that there is a stupid boar that dies from its tusks growing backwards piercing its skull.
Damn dying from the same thing that protects you
babirusa sort of just dont have any natural predators although, and its really only a problem that crops up in old males, i cant verify this is true but i wouldnt be surprised if that uncontrolled growth is either because its not really selected against an older member post reproductive age just dying or even maybe some factor which helps balance their population on a small island with few large predators, so an old male doesnt say harass the rest of the population or continue to utilise the limited resources or anything but that's all speculation.
@@TesterOuO Live by the tusk, die by the tusk.
Dental Plan!
@@RAFMnBgamingLisa needs braces!
We do actually see many different forms of horseshoe crab in the fossil record - there's one with huge "wings" going out and back each side of the shell.
At least twice horseshoe crabs split off freshwater variants! There aren't any around at the moment, but that could happen again in the future.
But isn't that what Darwin thought, Darwin reckoned living fossils where do to stable niche and/or ecology.
Yeah, idk why they dissed him like that when he got it mostly right. I hope noone seriously believes that he claimed these animals didn't change at all
1:58 The helicoprion at the background is drawn according to old reconstructions. After CT scan we now know their teeth don't roll outside of their jaws like this. Also helicoprion went extinct in early Triassic 250 million years ago.
I thought you said helicopter
Also what do they look like now
I suppose a factor of this may be that changes that look insignificant to us may actually have huge impacts overall. Small changes in skull bone structure or fin length/shape may look identical to us but come with big changes in bite strength or efficiency of moving through water. Our pattern recognising brains will say "these are basically the same" even if they have way different properties in their application.
Or changes in the cell chemistry to fend of parasites or toxins more efficient.
I don't like the Darwin slander here... You make it sound like he was completely bamboozled or that he took concepts like "living fossil" very literally. The guy who discovered (and/or semi-co-discovered) evolution was obviously smart enough to know evolution happens at different rates, and happens in ways that are not noticeable, even in spite of having access to literally none of the information we have today that help us understand the mechanisms behind it.
Oh, shut up. We know what he meant
Chill out, denis. Not like you had anything valuable to add.
Anyway, I get why the "darwin slander" irks you but I think the phrasing was mostly theatrical. Minute earth is part learning, part entertainment. It's not a lecture. Things are meant to be exaggerated sometimes. Makes it more engaging :)
@@diosdehuecomundo you are right, I was aggressive but I thank you for acknowledging my point after acknowledging my faux pas.
Imagine if your great great great …… grandparents looked just like you
Mine did
Tbh I literally look like my dad and grandpa when they were my age
Like I EXACTLY like them. And my brother also looked like them
Actually, they usually do, especially if you see them all at the same age.
That is more intuitive, what do you mean.
The replies are missing the point of the "..."
I'm not sure Darwin thought they "don't change at all", but realized they were changing slowly, as you said because they were working well
Darwin himself thought living fossils are the way they are due to a lack if changes in their environment meaning that there isn’t any pressure to change physical in any notable way
1:31 Oh, i wanted a pet chimp-garoo
Two very brutal creatures in one
The bite and brutality of a chimp and the kick and strength of a kangaroo.
Or would it be a Kangazee?
@@AdamSeiler It's a chimparoo if the father is a chimpanzee and the mother is a kangaroo. It's a kanganzee if the father is a kangaroo and the mother is a chimpanzee.
That would be legitimately fucking TERRIFYING
@@billberg1264 But what is it if both the chimpanzee and the kangaroo IDENTIFIES as the mother?
Imagine if the 100 million year old ancestors of humans could see into today’s world
dude they’re like rodents they wouldn’t care
The 100 mya ancestor of humans was in the video (the chimp/kangaroo one)
Probably would be wondering where all the dinosaurs went.
They would probably live in my basement and eat pet dogs and cats which are not fast enough. 😅
"What's that rainbow-colored fire on that your soft-rock tablet?
How it doesn't hurt to touch?
How does it make sound?
Do you cook food with it?"
What's so surprising? We already know that crabs are the optimal being
the true optimal being are crab people
Honestly love these videos, so entertaining
here you go: ruclips.net/video/LWB0-tGwb_E/видео.htmlsi=C5TPMhXG9k_WMt8Z :)
Can you please do a video on how we got domesticated cats
Here you go! It's an old one but a good one: ruclips.net/video/LWB0-tGwb_E/видео.htmlsi=ZLO2o9laln-nsoEs
Domesticated cats got us.
One day, cats saw that a lot of mice were gathering around stra ge new caves which pop up around some hairless monkeys.
It was also protected from rain and coldness.
So the cats decided to move in and allow us to serve them. 😊
They just kinda domesticated themselves
This seems like an interesting video.
It was indeed an interesting video.
@@oreosaurs2658 ye, it was neat.
I kinda think that's what he meant - its body plan works so well that they've looked the same FOR THE MOST PART for eons.
I've seen this happen in simulation. I had a species that grew to extreme lengths in the Android app Cell Lab, with a spine that alternated branching off cells/organelles on either side. I left it running for so long that it had completely reorganized its genome but retained or revolved an identical structure despite the mutations to literally all of its genome.
2:25 Evolutionary Mewing 🗿🗿
Fr
Once an animal is optimized for its environment, there is no pressure on the genome.
But that doesn't mean change doesn't continue.
If there is no pressure doesnt mean that animals with bad mutations don't die off and animals with mutations that are superior to normal genes don't pass them on thus furthering the species! That still happens!
I wonder if advanced intelligent species will become “living fossils” due to basically zero evolutionary pressures, or that it’ll just become a random walk which they basically won’t notice until looking into their deepest archives.
To borrow from tier zoo: A meta build will remain a meta build if the meta does not change
I love Tier Zoo's game based analysis of nature.
I know there's a british owl that used to be white but after global warming melted lots of the snow and had lots of smoke it became black in a few years
same with the peppered moth
? there's no case like this, the most simillar thing was with the peppered moth, where soot from the industrial revolution meant that there was an increase in dark coloured surfaces and a decrease in light surfaces, thus favouring a specific morph of the moth (which had already existed) and shifting the population structure of the moths to favour that dark morph [which is an example of natural selection]
@@user-mn5tt8wk6fI am pretty sure he meant that, just somehow his brain exchanged the moth and owl.
You have conflated it with the moth thing but owl microevolution is a real phenomenon. The survival rates of brown owls compared to gray owls have risen due to the reduced amount of snow.
@@pcenero Hm? what species has a brown and grey morph(I dont think itd be snowy owl as I believe those phase in and out of plumages and cant think of any other uk owls that could possibly be dimorphic)? I haven't heard of any climate changed induced micro-evolution in owls but would happily be proven wrong with a good source!
The Tuatara has a car named after it
Evolution also does not happen for the purpose of evolution. If there is no need to evolve and evolving also cannot currently provide any major benefit, then what would be the point of evolving? Sure, there are always random mutations but if those cannot provide any noticeable benefit, they will not propagate very far.
Wrong. Plenty of negative and neutral things exist widespread in evolutionary chains. We have a bunch of them. What matters is the percentage with a given gene who get to breeding age before it kills them, not whether an outside observer might consider the gene an overall good, bad, or neutral thing for the longevity of the species.
If a species only lives for 3 months on average because they have some horrible genetic defect that takes them out, there is no evolutionary pressure to remove that defect if they can reproduce effectively within 2 months.
There might even be the occasional member who doesn't have that gene and gets to live the fullest possible 8 years for it's species instead but they're not likely going to be able to outbreed the members who only get 3 months (especially given they almost certainly still carry the bad gene meaning their offspring will likely have it as well) so nothing will change even if it's technically "better".
There is no value judgment happening with evolution, just pure statistics.
Can you make a video on which things can cross breed and which cant, and why.
I’ll start the endless list of things that can’t cross-breed for you:
1) ping pong balls and guacamole;
2) orangutangs and tree stumps;
3) supercritical CO2 and J.S. Bach
4) [your turn]
…I’ll have to leave the answer to the ‘Why can’t they cross-breed?’ question for someone smarter than me. It’s way above my pay-grade.
Are species that seem to evolve much slower less likely to go extinct than ones that evolve fast? Or is it the other way around? I would think that if a species can remain unchanging for millions of years it would probably be less likely to face extinction, but I could be wrong.
It's about the environment and the other organisms, rather than the rate of evolution. Organisms that don't evolve do so because they don't need to, and ones that do, do so because they do need to.
Interesting question. It would seem that evolving slowly could be harmful in a rapidly-changing environment. Like, if you can't adapt quickly enough, you will go extinct. Species that don't seem to change much over time are likely the ones fortunate enough to live in environments that have been fairly stable during that time.
@@MinuteEarth Humanity is a prime example of a species that stopped evolving because we stopped needing to, as we rose to power through technology. Now we're burdened by a host of inefficient parts because they aren't detrimental enough to be weaned out, such as the appendix, and our foot structure.
@@Espartanica Saying we stopped evolving seems rather premature. Technology has not exactly been around for very long from an evolutionary point of view, and we have changed over the last few millenia, just not very significantly.
@@Llortnerof Homo sapiens as a species exists for less than a million years, which is only 20,000 generations...
We're probably the slowest breeder on the planet, taking about 25 years to reproduce...
0:15 Now I know what the Cuddlecanth is based off in Cat Goes Fishing
You know. Speaking of Species that hasn't changed much. There is a species of plant that has been around for more then 50 million years known as the Ginkgo biloba, it is the only species in not only the Genus, Family, Order but Division, yes, I mean the Taxonomy Division that contain a single species of Plant and remains unchange for the past over 50 million years.
Your last sentence blew it.
Gar: guys i have plan. we going to evolve slowly, everyone clear.
Tuatara: leeerooooooyyyyy jenkiiiinsssssss
I don't know why, I've seen multiple MinuteEarth videos, but this is the video that compelled me to subscribe. Thanks for the video, and great job!
Fascinating!
Never knew about this
“This video is sponsored by skillshare”
"Watch to the end of this video to find out more"
"skillshare is the largest online learning community for creators"
A chimparoo would be terrifying!
Would ancient horseshoe crabs and modern ones produce fertile offspring?
I think the video suggests the answer is "no"; their genes are too different (which is what correlates to breeding compatibility)...
Heck yeah horseshoe crabs my boys!
They're the best!
Excellent video. What about Mangos and Avocados? Couldn't they be called 'living fossils'? They only exist because humans keep them around mechanically, but in their "natural" environment, they would have gone extinct in the last ice age.
They still do change though, right? It's just that now the humans dictate what changes occur.
Maybe apples or other fruit, which keeps the same varieties due to grafting (essentially cloning), could be called a living fossil if a variety lasts long enough?
@@jakistam1000Apples still need a base to be grafted on. I don't know the science of grafting, though, how genetically distant trees can be and you'll still get successful grafting!?
i have just learned about tuatara's and i am sad i didnt know about it earlier
Someone told then "you're perfect the way you are" and they just taked it has face value.
Maybe the animals that turned into land animals were more prone to mutation somehow. Or maybe exposure to more sunlight affects their mutations. Some thoughts on why animals in the water might mutate slower.
Not fair with Darwin, I bet his theory was species change physically and visually little by little over time and end up adapting. He didn't know about genetics, and now we have "🤓☝actually" people discrediting him by twisting his original argument.
So fucking real!!! Its not like it really matters all that much anyway, so what if a Horseshoe crab has evolved with the oceans shifting chemistry, its impressive you can see a fossil of one and say that it looks like the animal of today!
Living Fossil is a very fair and relevant term to describe animals that are visually not that different. Always will internal workings have to adjust and change.
Horseshoe crabs have no changed because they are already the perfect specimen. Source: My own biased unscientific love of horseshoe crabs
quite, to the conclusion
They seem to completed the evolution like a video game and tries world records by re-playing over and over again
In calculus and computer science that deal with evolutionary algorithms for AI it's called local maximum (local extremes). Whichever way you make a small step it will be downhill but a possible path to a higher peak can start just a few steps away.
No need to change perfection^^
Haven't bacteria and other unicellular organisms stayed the same for billions of years? 🤔
no
@@Dr.Ian-Plect Would you care to elaborate?
@@feynstein1004 All species evolve, even in the most conserved lineages. Over such time scales the environment changes a lot and new niches emerge. These are fertile grounds for evolution to make significant changes.
@@Dr.Ian-Plect I mean, I do get that but I just feel like microbes' DNA is already so short i.e. limited that there are only a low number of permutations possible. For eg. if you can only choose two colors (black and white) and you have a sequence of 10 vacant slots, then there are 2^10 possible combinations, which is quite a lot. But if you only have two vacant slots, you can only have 2^2 = 4 possible combinations. And once you saturate that, there's no more change possible, unless you can somehow fundamentally alter how DNA works, which I find unlikely.
@@feynstein1004 Reflect on my responses and how they highlight your lack of knowledge, which in turn renders your 'feelings' baseless;
" I just feel like microbes' DNA is already so short"
- based upon?
"For eg. if you can only choose two colors (black and white) and you have a sequence of 10 vacant slots, then there are 2^10 possible combinations, which is quite a lot. But if you only have two vacant slots, you can only have 2^2 = 4 possible combinations."
- 'slots', what are these and how did that notion get in your head? Are you confident/can you demonstrate this is how it works?
"And once you saturate that, there's no more change possible, unless you can somehow fundamentally alter how DNA works, which I find unlikely."
- so, continuing; how do you know these 'slots' have such a low maximum amount?
----------------
I want you to state where you got these notions from, as they clearly form the basis of your conclusions...
In the case of crabs, their form is so ideal that other species become them
you know for a lot of animals and plants that are called living fossils it's a shame that not too many people know about all their prehistoric relatives. if there were paleontologist back during the early cretaceous I'm sure they would call something like Koolasuchus a living fossil giving it lived long after the other Temnospondyls went extinct.
If a species evolves less rapidly than others, isn't it possible that it has some mechanism for better controlling genetic mutations? It might be a useful genetic trait to pursue, if so, not only to reduce undesirable heritable mutations, but perhaps to control cancers.
The Gingko tree is also fascinating to examine.
personally I prefer the term "living fossils", but perhaps the term "immutable species" would be better||
the proverb "clothes do not make the man" can be applied but perhaps it would be better to say "adaptation does not make the fossil"
Immutable would imply they can't change. They just don't because they don't have a need to.
I think that's even worse because they have undoubtedly changed enough genetically to be considered different species.
it reminds me how there are very subtle differences in the skulls of humans from different races
The devs needs to fix this bug guys.
This is actually really fascinating. Honestly kinda makes me wish that some birds just remained dromiosaurs for no other reason than..well I just want a non avian dinosaur as a pet or just to look at
No bird was a dromeosaurid (note the spelling).
@Dr.Ian-Plect well they did descend from a similar species like microrptor
@@daviddimitrov3696 Microraptor (again, note the spelling) was a dromeosaurid, your wording is poor.
@Dr.Ian-Plect I missed a letter. Besides I haven't done much research on the ancestry of birds. I've been more focused on non-avian dinosaurs
@@daviddimitrov3696 ok
When you update from version 1.0.1A to 1.0.1B and then rollback because it broke the emojis.
"Yo, dude. Wanna evolve physically?"
"Nah, I'm fine."
I was not aware about the transition to salt water for the Celo.
Horseshoe crabs are awesome! They have blue blood because copper transports oxygen instead of iron. Their blood is also extremely valuable for developing medicine, although sadly some die from their blood being taken.
The term living fossil is useful, it just isn’t as literal as the video is holding it to. It’s perfectly useful to describe a general body shape that works for a very long lasting niche
The last part is very crucial I think. Mutation rate doesn't necessarily translate into different look. See domesticated cats and dogs for example. Cat races are more genetically diverse than dog races, even though cat races over all look pretty similar to each other while dogs vary wildly. And, in both cases and most probably in livestock, too, the biggest change in the genome has led to the animal being more tame and relaxed around humans. Changes in behavior aren't preserved in the geological record at all or at least not very well.
So you're telling me that my dream of a chimparoo will never be realized??? What a bummer
*horseshoe crabs 100 MYA”
“Yeah I kinda got this s*** figured out”
The chimp roo thing... has anyone checked on that?
So, crabs are one of the best types of animal to be?
I'd love to see a chimparoo!
they didnt break evolution. thats exactly how evolution works.
they are perfectly suited for their environment, no need to adapt.
untill the environment changes they wont
1:45 oh shit, if they can evolve so fast, they must have already reached their peak form millions of years ago
My total lack of qualifications isn't going to stop me from taking a stab at this. This almost certainly relates to creatures total population and mobility
just like in thrive computer game. when you reach perfect form, you stop evolving. real life is different, as there are competition within same specie that drives evolution
Trilobites… are my favorite the fact they helped punctuate equilibrium theory kicks it
wait... im a Squirrel ?!
The nerd in me is very grateful to you for drawing the DNA's two helixes at the correct relative phase ❤❤❤
Want to evolve together?
HSC: NAH, I'm good.
When a program runs good enough, it just receives hot fixes for 100k years.
The example I’ve most often given is immune system changes. Subtle changes in antibody production are happening all the time, and are passed on to offspring. COVID-19 hit us hard, but to our children, it’ll just be another cold/flu.
I'm pretty sure most people couldn't tell apart a Devonian centipede from a modern day one
I also have to change
Get in line buddy :)
Latimeria and Coelacanthus don't look *that* similar. The difference is significant enough that I can tell you have a Latimerian in both images, even though one of them is supposed to be a Coelacanth.
There used to be many different horseshoe crabs across many genera, but only 4 species are around today. I’m not sure whether to call them successful for lasting so long, or an evolutionary dead end for losing the vast majority of their diversity to reach this point.
horseshoe crab: "Back in the ol' days we didn't need fancy things like 'evolution'. Everyone worked hard and life wasn't easy but we managed to stay alife. That's the only thing that was important."
I think the horseshoe crab is just the perfect organism which is why it never seems to change
Nothing guys ... those creatures evolve slower than others
Funnily, I was just listening to the oologies's podcast episode on gars. If you want to learn more about this "long cute ancient patient boopable nightmare fish", I highly recommend it!
evolution's perfect organisms
Tuatara mentioned!
2:25 ain’t no way bro
Next episode:
How fast human body would change when or if humans started to procreate in zero gravity space-stations ? 🤔 Can space humans look totally deferent than today humans in just few hundreds years ? 🤔
The horshoe crab - gods perfect creation since 445 million jears ago.
Also they blood is the only reliable way to detect bacteria to this day, which is crazy to tho think about.
substantiate 'god'
@@Dr.Ian-Plect Come on man, have some humor!
@@Dr.Ian-Plect God is The Creator of existence.
@@zhamed9587 You should start your learning by understanding what substantiate means, plant pot.
@@Dr.Ian-Plect We know what it means, and the evidence is overwhelming.
It's always awesome to learn something new about life on our planet.
100mya flowering plants already appeared - birds were flying around as well.
Horseshoe crab saw the future and they just didnt wanna pay bills
They've reached peak performance with nothing to improve.