The Longest-Running Evolution Experiment

  visningar 3,631,543

Veritasium

Månad sedan

If you ran evolution all over again, would you get humans? How repeatable is ? This video is sponsored by @BountyBrand.

Special thanks to Prof. Richard Lenski and team for showing me around the lab - it is an honor to be able to witness and document such a historic science experiment.
Thanks to Dr Zachary Blount for the help with research and setting up the competition time-lapse, Dr Nkrumah Grant for microscope images of the long-term line cells @NkrumahGrant
Devin Lake, Kate Bellgowan, and Dr. Minako Izutsu for being part of this video. Long Live the LTEE!

LTEE website - myxo.css.msu.edu/ecoli/index.html
Intro footage courtesy of the Kishony Lab - kishony.technion.ac.il
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
References:
Lenski, R. E., & Travisano, M. (1994). Dynamics of adaptation and diversification: a 10,000-generation experiment with bacterial populations. Proceedings of the National Academy of Sciences, 91(15), 6808-6814. - ve42.co/Lenski1994

Lenski, R. E., Rose, M. R., Simpson, S. C., & Tadler, S. C. (1991). Long-term experimental evolution in Escherichia coli. I. Adaptation and divergence during 2,000 generations. The American Naturalist, 138(6), 1315-1341. - ve42.co/Lenski1991

Good, B. H., McDonald, M. J., Barrick, J. E., Lenski, R. E., & Desai, M. M. (2017). The dynamics of molecular evolution over 60,000 generations. Nature, 551(7678), 45-50. - ve42.co/Good2017

Blount, Z. D., Borland, C. Z., & Lenski, R. E. (2008). Historical contingency and the evolution of a key innovation in an experimental population of Escherichia coli. Proceedings of the National Academy of Sciences, 105(23), 7899-7906. - ve42.co/Blount2008

Blount, Z. D., Lenski, R. E., & Losos, J. B. (2018). Contingency and determinism in evolution: Replaying life’s tape. Science, 362(6415). - ve42.co/Blount2018

Wiser, M. J., Ribeck, N., & Lenski, R. E. (2013). Long-term dynamics of adaptation in asexual populations. Science, 342(6164), 1364-1367. - ve42.co/Wiser2013

N, Scharping. (2019). How a 30-Year Experiment Has Fundamentally Changed Our View of How Evolution Works. Discover - ve42.co/Scharping

▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
Special thanks to Patreon supporters: Mike Tung, Evgeny Skvortsov, Meekay, Ismail Öncü Usta, Paul Peijzel, Crated Comments, Anna, Mac Malkawi, Michael Schneider, Oleksii Leonov, Jim Osmun, Tyson McDowell, Ludovic Robillard, Jim buckmaster, fanime96, Juan Benet, Ruslan Khroma, Robert Blum, Richard Sundvall, Lee Redden, Vincent, Marinus Kuivenhoven, Alfred Wallace, Arjun Chakroborty, Joar Wandborg, Clayton Greenwell, Pindex, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi, Ron Neal

▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
Research and Writing by by Derek Muller, Petr Lebedev and Casey Rentz
Animation by Iván Tello
Filmed by Derek Muller, Emily Zhang and Raquel Nuno
Edited by Derek Muller
Music by Jonny Hyman and from Epidemic Sound epidemicsound.com
Additional video supplied by Getty Images
Thumbnail image courtesy of the Kishony Lab
Produced by Casey Rentz
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀

Kommentarer
21trips
21trips Timme sedan
All those generations and none of them have have grown even as big as an ant? Great evidence against evolution between kinds of animals.
JD
JD 2 timmar sedan
That commercial at the end just wiped out my following.
Oren Bartal
Oren Bartal 2 timmar sedan
Finally we know what 42 really means - It's the number of days it takes e.coli to expand enough to fill the entire observable universe
Not Rian's Luke
Not Rian's Luke 3 timmar sedan
30 seconds into the video, and all I can think is: "Okay, but is it a good idea to forcibly evolve e-coli bacteria into being resistant to antibiotics?"
James Rodwell
James Rodwell 5 timmar sedan
The bad computer universally pinch because parade rheologically injure as a freezing shorts. quiet, splendid heart
Tungkung Langit
Tungkung Langit 7 timmar sedan
Generation 999k: The bacteria started behaving like nanobots.
Urban Explorer
Urban Explorer 9 timmar sedan
I have a doubt, have they ever checked for a bacteria that could survive the autoclave?? I mean there could be a bacteria that might have mutated so much that it might have gained ability to survive the autoclave.....
Vorpal Inferno
Vorpal Inferno 11 timmar sedan
Grow bacteria that eat plastic.
Vorpal Inferno
Vorpal Inferno 11 timmar sedan
Imagine doing this to humans. Welcome to grimdark.
Illyasviel von Einzbern
Illyasviel von Einzbern 12 timmar sedan
Did you ask the professor how lethal those E.Coli bacteria are if they were to infect a human?
Samu Salla
Samu Salla 14 timmar sedan
how come no one is talking about how beautiful that lab is
Michael Chen
Michael Chen 14 timmar sedan
Just curious, is there any risk of the super-evolved E. Coli infecting the scientists?
Purvang Vasani
Purvang Vasani 20 timmar sedan
Can we please get a video on lucid dreaming?
Scott Kidder
Scott Kidder Dag sedan
Wait, but evolution wouldn’t really happen if you didn’t have the selective pressure of competing with other bacteria for resources. I mean it would, the bacteria would still have mutations, but as long as the those mutations weren’t fatal, the colonies would simply randomly generate new versions but none of them would be selected for. In other words, there wouldn’t really be any “improvement” because there wouldn’t be any need to. What would they be improving at? I guess what I’m saying is that your environment is changing and it’s hard to imagine one in which nothing changed. Even in lab conditions, there’s still selective pressure. And as the colony grows, that pressure increases. So evolution is happening in the colonies not in spite of there being no environmental change in the lab, but because of it. Or are you saying that the environmental change is relatively small in the lab compared to the “wild.” And therefore, we’d expect to see a higher rate of evolutionary adaption in the wild than we would expect in the lab? Or were you saying that even in a static environment, there’s always a way to become better adapted to it, there is no perfect way to be adapted? It seems to me, nature would find the top best ways to be adapted and they would probably be different. But I also ask the question, is it even possible to keep the environment static and unchanging? And environment with 10 million bacteria in the same media is very different than an environment with 10. Even an environment with 11 bacteria is different than one with 10. So how could you effectively keep the environment the same? Or am I just missing the point? Lol
Crispr CAS9
Crispr CAS9 19 timmar sedan
"Or were you saying that even in a static environment, there’s always a way to become better adapted to it, there is no perfect way to be adapted?" This one, I believe.
Elu Herrahaz
Elu Herrahaz Dag sedan
But why does it stay coli and doesn't evolve into a new species of bacteria?
Crispr CAS9
Crispr CAS9 19 timmar sedan
" evolve into a new species of bacteria?" At the point people determine these differences sufficient to label the populations as separate species, it will be. Species is a human concept, and a human label. By an ecotype conception of microbial species, the Ara-3 strain should already be classified as a separate species. By a more conventional delimitation, not until the populations reach a 3% 16S divergence.
PoM MoM
PoM MoM Dag sedan
Horrifying
Poindexter Queue
Poindexter Queue Dag sedan
Deliberately creating superbacteria... what could go wrong?
martixy
martixy Dag sedan
SCIENCE!
RB 70
RB 70 Dag sedan
At what point in the experiment did the E. Coli change into a different species of microorganism?
Crispr CAS9
Crispr CAS9 Dag sedan
The E coli don't change into a different species. The population diverges and accumulates differences, and at some point people determine these differences sufficient to label the populations as separate species. Species is a human concept, and a human label. By an ecotype conception of microbial species, the Ara-3 strain should already be classified as a separate species. By a more conventional delimitation, not until the populations reach a 3% 16S divergence.
Sahnoune Khaled
Sahnoune Khaled Dag sedan
its adaptation not evolution
Crispr CAS9
Crispr CAS9 Dag sedan
Evolution is the change in allele frequencies in a population over successive generations, which this definitely is.
David Lee
David Lee Dag sedan
Ah a miniverse
Jean d'Arc
Jean d'Arc Dag sedan
So let me get this straight... you guys are evolving super hungry, super fast breeding bacteria that aren't fussy eaters :/
ranty13
ranty13 2 dagar sedan
But after the equivalent of "1.5 million years" of evolution, they haven't really evolved. They are still E.coli, just better adapted E.coli. They still have the DNA of E.coli. They haven't evolved into worms or another organism. I would say this is evidence of adaptation, not evolution.
Crispr CAS9
Crispr CAS9 Dag sedan
"I would say this is evidence of adaptation, not evolution." Evolution is the change in allele frequencies in a population over successive generations, which this definitely is. "They haven't evolved into worms or another organism." If they evolved into worms or another organism, that would disprove evolution. Expecting as evidence for evolution something that would disprove evolution is a fairly clear demonstration that you don't understand what evolution is in the first place.
Climb High
Climb High 2 dagar sedan
And everyone wonder how we get to the Fauci Ouchie and the bio-terrorism we going through now. Starts like this right here
Paul Doughty
Paul Doughty 2 dagar sedan
This is cool to watch however a non-scientist here would think that these bacteria are adapting not evolving. Meaning these bacteria didn’t grow a tail or change their physical attributes to become something else. The closest they came was that they introduced something new to their diet. A far cry from physical change. My kid decided to try mushrooms last week but he’s still my son. Definitely cool but not what I think defines evolution.
Crispr CAS9
Crispr CAS9 2 dagar sedan
"would think that these bacteria are adapting not evolving" Evolution is the change in allele frequencies in a population over successive generations, which this definitely is.
Robert Cummins
Robert Cummins 3 dagar sedan
Bounty? Really? Bizarre.
Taliesin River
Taliesin River 3 dagar sedan
Promoting paper towels is pretty dumb. You're trying to make people afraid of doing something that was never dangerous with a very unscientific experiment, and promoting an unnecessary product that's bad for the environment. I'm disappointed that a science channel I respect would accept a sponsor like this.
Rin倫
Rin倫 3 dagar sedan
So, is this theory can apply to viruses too? If so, people can estimate how frequently Covid-19 will change per generation in theory?
Kyle Mecca
Kyle Mecca 3 dagar sedan
This is absolutely amazing, I am fascinated by evolution. I want to see more Also I'm surprised you advertised bounty. There is nothing wrong with a little bacteria and germaphobia is indicative of a disconnection with the earth. Let's reduce and reuse, not encourage waste due to neurotic fears.
Taliesin River
Taliesin River 3 dagar sedan
yes, very disappointing. Especially his completely unscientific 'experiment' to prove why they're useful.
Marge N.
Marge N. 3 dagar sedan
So this is what will actually kill us all?
relentlessmadman
relentlessmadman 3 dagar sedan
I also use paper towels but I use the less expensive brands
relentlessmadman
relentlessmadman 3 dagar sedan
does any one make paper towels from hemp yet????
Danny Ramirez
Danny Ramirez 4 dagar sedan
My question is would there ever be a singularity that would happen during the evolutionary process
mark green
mark green 4 dagar sedan
What a brilliant universe G-D Created, even a tiny bacterium is programed to evolve, WOW!!!
Rhianne Moll
Rhianne Moll 4 dagar sedan
Eat E. coli, Jonathan Wells!
Арсенал
Арсенал 4 dagar sedan
11:15 I got goosebumps here.
Rhadoo RootBwoy
Rhadoo RootBwoy 4 dagar sedan
Sponsored by paper towels... How about you stop promoting non eco-friendly products?
Thom Of Hillbilly Haven
Thom Of Hillbilly Haven 4 dagar sedan
gloves??
Heinz Dontbother
Heinz Dontbother 4 dagar sedan
@Veritasium, you might suggest the professor and his students to use mipar (mipar.us) to count those bacteria. Counting by hand is not necessary nowadays.
BP
BP 4 dagar sedan
Could you try this with various antibiotics? seperated from each other in the same fashion ? Did you try bacteria from the Ganges river? I heated that there is a antibiotics plant dumping these batches of bacteria in the water…
Tom shiba
Tom shiba 4 dagar sedan
would be funny if one day thes ebacteria became small animals with eyes
Terry Caldwell
Terry Caldwell 5 dagar sedan
The smartest ad integration
chuck sch.
chuck sch. 5 dagar sedan
Wow, this is real nice science, love it! Keep going with you works its really cool. :D
Matthew Salvatar
Matthew Salvatar 5 dagar sedan
Wait, so if I get the ending there. Life shows a capacity to transcend entropy?
To Serve Man
To Serve Man 4 dagar sedan
Define "Entropy." And nothing in the universe (flowing chain reactions) transcends the universe.
Danish
Danish 5 dagar sedan
When did Adam Ragusea start doin science content ?
michaelsimkin
michaelsimkin 5 dagar sedan
According to the evolution theory they were supposed to develop into a multicellular organism or something. And this is what we do not see.
Crispr CAS9
Crispr CAS9 5 dagar sedan
"According to the evolution theory they were supposed to develop into a multicellular organism or something." So you're saying you don't know anything about evolutionary theory? Fun.
erikfinnegan
erikfinnegan 5 dagar sedan
Veritasium FAKE for money: big experiment setup to pitch paper towels - microprint disclamer in the end says that experiment is "not representative". Not the the sort of statistical significance that I've grown used to wrt this channel. Oh, and you should always use recycled material or wash. There's always room for a couple kitchen cloths in the washer.
David Kellen
David Kellen 6 dagar sedan
I'm really concerned about how they handle bacteria... No gloves, just a slight "Touch" in the fire and "importante" the material and bacteria are being exposed to Open air...
Tyray3P
Tyray3P 6 dagar sedan
It's all well and good until the germs can transfer through xenonite
Cedric Velarde
Cedric Velarde 6 dagar sedan
1st gen e coli: we cant eat that its deadly! 1000000+ gen e coli: u wut m8?!
A Real Life Dog
A Real Life Dog 6 dagar sedan
Crematoriums are for organisms that are already dead... Those furnaces look more like something found at Dachau
МАТЬ-РОССИЯ
МАТЬ-РОССИЯ 6 dagar sedan
*how to create a supervirus*
gyamlj
gyamlj 6 dagar sedan
This is a highly controlled environment. Compare the competitive advantage of the newest and oldest colonies in a natural world where innumerable other factors weigh in to survival. It may very well be that the older organisms are better able to survive. This is analogous to selective breeding that creates an animal with desired characteristics but is otherwise less capable of overall survival compared to its ancestors. I'm afraid this teaches me nothing.
Crispr CAS9
Crispr CAS9 5 dagar sedan
"I'm afraid this teaches me nothing." Says more about you than the experiment, I think.
Ashethorama
Ashethorama 7 dagar sedan
Did anyone else notice the reference from the movie “The 13th Warrior” on the fridge? Timestamp 7:50 minute
Seven Ligthson
Seven Ligthson 7 dagar sedan
YES! Nothing out is not in and everything out is in ;-)) 1.5 (oo.000) is human program given by life = love = what you are in need of, who (do you) are (you)? I took my ABO once more!
Christopher Inman
Christopher Inman 7 dagar sedan
Queen Elizabeth I (of England) cooked a fruitcake for members of parliament to celebrate its opening. A bit was saved to be included in the next parliament's opening, etc. So now, when parliament begins its new season, the members are privileged to have a bit of cake cooked by Shakespeare's favorite monarch! [i have not fact-checked this because i don't want to find out if it is not true]
maruftim
maruftim 7 dagar sedan
Mad scientist fell into bacteria gacha hell...
AJ T
AJ T 7 dagar sedan
Is he referring to Confirmation Bias or is it something else?
ZedCactus
ZedCactus 7 dagar sedan
This episode was great! Really interesting.
Lief Bamberg
Lief Bamberg 7 dagar sedan
disappoinited that derek is now hawking that idea that greater bacterial spread is somehow dirtier, and that you should use disposible environment wrecking paper over washable cloths.
WowZers
WowZers 7 dagar sedan
Imagine being the chad bacteria to first eat the citrate
Rodrigo Segura
Rodrigo Segura 7 dagar sedan
42, ¿coincidence? I think not
Frenchnostalgique
Frenchnostalgique 8 dagar sedan
Prof Richard Lenski has the same accent as Rich Evans and it's throwing me off.
Azurium
Azurium 8 dagar sedan
Me seeing 1% selection first hand: "So that's what the aliens are doing to our universe and what the Great Filter could be."
Azurium
Azurium 8 dagar sedan
Context: imagine that at 7:30 he's talking about intergalactic species expanding across the universe.
Christian412 America
Christian412 America 8 dagar sedan
The educated dumbasses still call it evolution. After 70000+ generations the bacteria is still producing bacteria. The bacteria has not produced anything but bacteria. Why is it so hard to get un biased conclusions? The only thing that has been observed is ADAPTATION not evolution.
Crispr CAS9
Crispr CAS9 8 dagar sedan
"The educated dumbasses still call it evolution" Evolution is the change in allele frequencies in a population over successive generations, which this definitely is. "The bacteria has not produced anything but bacteria" If they produced something other than bacteria, it would disprove evolution. You understand that, right?
SuperSonic Boom
SuperSonic Boom 8 dagar sedan
Nah, if the flask breaks we become the solution to the experiment.
Michael Kurek
Michael Kurek 8 dagar sedan
It’s called mutation or adaptation. NOT EVOLUTION! The bacteria will always remain bacteria, just more resistant.
Crispr CAS9
Crispr CAS9 8 dagar sedan
Evolution is the change in allele frequencies in a population over successive generations, which this definitely is.
Guy Fox
Guy Fox 8 dagar sedan
IT'S GOD! LOL
Samaila Abdullahi
Samaila Abdullahi 9 dagar sedan
I am forever grateful to Dr IGUDIA on SEcycle who cured me from herpes with his herbal medication, you are so real and trusted.
RD2564
RD2564 9 dagar sedan
Beautiful video. Biosciences are a rich hunting ground for new videos.
David Blank
David Blank 9 dagar sedan
So...when do they turn into monkeys??? Can monkeys evolve into bacteria???
Crispr CAS9
Crispr CAS9 9 dagar sedan
"So...when do they turn into monkeys" Based on evolutionary science, never. If you think evolution suggests otherwise, you don't understand evolution.
DeadEndFrog
DeadEndFrog 9 dagar sedan
well don't judge the Qu when they do this to us :^)
lalit pal
lalit pal 10 dagar sedan
I see you evolving from young youtuber :D
wildstar2424242424
wildstar2424242424 10 dagar sedan
A million bacterial monkeys typing on a million bacterial type-writers.... One of them finally wrote the opening to hamlet
Mike Tacos
Mike Tacos 10 dagar sedan
13:48 A couple more generations and they’ll be growing eyes and noses.
Mike Tacos
Mike Tacos 10 dagar sedan
Then someone breaks the glass.
Chris Koll
Chris Koll 10 dagar sedan
I'll bet you I can make a dog "evolve" so that it will CRAVE something that canines would NEVER consume if left to their own tastes(sp?)...
mwuaha
mwuaha 10 dagar sedan
what?
Truther
Truther 10 dagar sedan
Are tests like this being done on viruses?
FuriousGeezer
FuriousGeezer 11 dagar sedan
So what you are saying is, after 75,000 generations, it's just better bacteria, but in the same amount of generations we went from monkey to man? Why didn't it macro evolve?
FuriousGeezer
FuriousGeezer 10 dagar sedan
@Crispr CAS9 fair enough! I am still seeing no evidence of macro evolution, but that timeline sure makes it look like more of a possibility. My timeline was clearly off
Crispr CAS9
Crispr CAS9 10 dagar sedan
@FuriousGeezer "it's a long time from bacteria to monkey" Monkeys are not descended from bacteria. "We get what a billion or so years?" 3.5 billion from first life to complex life, another 100 million to get on land, another 150 million for mammals, another 100 million for primates, another 50 for humans. Approximately.
FuriousGeezer
FuriousGeezer 10 dagar sedan
@Crispr CAS9 Both are human though, yes. I poorly worded it.
FuriousGeezer
FuriousGeezer 10 dagar sedan
@Crispr CAS9 it's a long time from bacteria to monkey and again to man. Not sure there is time for that🤷🏼‍♂️. We get what a billion or so years?
Crispr CAS9
Crispr CAS9 10 dagar sedan
In the same number of generations, our ancestors went from Homo erectus to Homo sapiens. Both of those are humans.
Neiley
Neiley 11 dagar sedan
so how long til one of the containers crawls off? :P
sf
sf 11 dagar sedan
using the same needle for different flask samples???!!
Bangs Cutter
Bangs Cutter 11 dagar sedan
The human scale equivalent of this would be alien abduction encounters, where aliens continuously sample humans as they observe our evolution.
Brad Shymon
Brad Shymon 11 dagar sedan
Shouldn't forget all the generations of students who evolved the professor's knowledge and status! 🧐
realitycheck2001
realitycheck2001 11 dagar sedan
Wait. She wasn’t wearing gloves. Am I missing something?
Gary CLark
Gary CLark 11 dagar sedan
Ok thats stretch of a comparison. The mutations of a one cell bacterium are quite different than the mutations that would have to occur for an ape like creature to transform into what man is today. I don't care how many million years you tack on to it.
Crispr CAS9
Crispr CAS9 3 dagar sedan
@Gary CLark "viable offspring means to me that the offspring can then reproduce." Then you are looking for the word 'fertile'. Viable just means 'living', so the offspring is born and can survive. "The sturddlefish is sterile like the mule" That's unclear at this point. They won't hit sexual maturity for a decade, so until then it's just guess work. Also, mules are not always sterile, just usually, and the overwhelming majority of hybrids are more fertile than mules. "Do we have empirical evidence of this?" Yes, it's how reproduction works. "Is there any physical evidence to show these ancestral lineages?" The fossil record. "but I still have issue with the assumption that an organism of one species is the inherent ancestor of another species." Good news, we don't assume any single organism is an ancestor to another species. The theory operates at the level of populations, not individuals. 'Ancestral to' usually just means that a fossil population is more closely related to the actual ancestors of a modern population than to anything else, not that it literally contained the ancestors. "We don't have evidence of one species evolving into another species in the fossil record or in todays timeline" Very technically, a population becomes a different species from its ancestors when people say it does, because species is a human label. What we have extensive evidence for is populations diverging morphologically over time, and such morphological divergence is highly correlated with getting labeled as a separate species by people. But using a more colloquial understanding of 'one species evolving into another', we have plenty of examples. Homo erectus to Homo sapiens, for one. We also have really great records for the evolution of horses, whales, birds and several other groups of dinosaurs, a huge number of fish lineages, and countless invertebrates. More or less every major transition is covered. "or in todays timeline." There are dozens of laboratory examples of speciation, and several examples in the wild.
Gary CLark
Gary CLark 3 dagar sedan
@Crispr CAS9 viable offspring means to me that the offspring can then reproduce. The sturddlefish is sterile like the mule. A hybrid is a hybrid and not a species for a reason. Your definition if I understand correctly relating to phylogeny in taxonomy that classifies organisms base on closely related characteristics. So you assume that because there are shared characteristics in the tree of life taxonomy of generations that the said species have a common ancestor. Do we have empirical evidence of this? Is there any physical evidence to show these ancestral lineages? I believe taxonomy to be a great way of grouping organisms in a way to understand common characteristics of organisms but I still have issue with the assumption that an organism of one species is the inherent ancestor of another species. We don't have evidence of one species evolving into another species in the fossil record or in todays timeline. It's a definition that proves to much.
Crispr CAS9
Crispr CAS9 4 dagar sedan
@Gary CLark Definition from your most recent comment (my emphasis): " a category of biological classification ranking immediately below the genus or subgenus, comprising related organisms or *populations* potentially capable of *interbreeding*" Definition from your previous comment: "the ability to reproduce viable offspring" You'll notice that the Webster's definition indicates that it is referencing populations, delimited by potential interbreeding within that population. Your definition makes no indication of populations or how to delimit within. By your definition, every fertile organism is a separate species, which would obviously be nonsense. The Webster's definition, as it happens, is also wrong since it would mean there are no species of bacteria, which is obviously nonsense. And it would mean that paddlefish and sturgeons are the same species, in spite of being in different families. They would have been better to say something like: "a category of biological classification ranking immediately below the genus or subgenus, comprising related organisms or populations [sharing some set of characteristics, (e.g. the ability to interbreed).]" There are many common species concepts in biology, and none are universally accepted. Webster's decided to use only one of them, which is problematic, but then again they are not writing for a scientific audience. "What is your definition." Species are hypotheses that populations delimited by some metric(s) are monophyletic with respect to ancestry, and that no monophyletic subclade(s) of those populations can be delimited by the same metric(s). The resulting population's monophyly can then be tested by other delimitation metrics producing either concordant or discordant results. "Now I think that your just saying stuff to say stuff." Language is a tricky thing, and must be used with care. Especially when discussing complex topics. I use my words in very specific ways to convey very specific meanings, and I assume that others do the same. It is possible I did not respond to the meaning you intended but I can only respond to the meaning I understand, not necessarily the one you intend.
Gary CLark
Gary CLark 4 dagar sedan
@Crispr CAS9 websters dictionary : a category of biological classification ranking immediately below the genus or subgenus, comprising related organisms or populations potentially capable of interbreeding, and being designated by a binomial that consists of the name of a genus followed by a Latin or latinized uncapitalized noun or adjective agreeing grammatically with the genus name. What is your definition. Now I think that your just saying stuff to say stuff.
Crispr CAS9
Crispr CAS9 4 dagar sedan
@Gary CLark "definition of a species is the ability to reproduce viable offspring" That is not a definition of species at all, and certainly not the way the word is used in biological science. "I would argue there is proof in science or rahter evidence if you want to call that" Since proof and evidence are not synonyms, this is not a question of preference. One is correct, the other isn't. There is no proof in science. "organized randomly through mutation in a way to create vision." The organization is by selection, which is non-random. Mutations just produce the variation that selection can act on. "how do we know it's random" Because we know how mutations work, to a reasonable degree of accuracy. "Could it not be hormonal?" Hormonal differences can cause differences in fitness, but what causes the differences in hormones? To the best of my knowledge, all differences in hormones are either differences in genetics or differences in environment acting on genetics. And here we are talking about a subset of the population with a differential hormonal response when exposed to the same environment as the rest of the population, so it can *only* be the underlying genetics that explains it. "or that the organism sensing something is changing" Let's say this, or any of the rest of what you suggest happens: the question is 'how is it happening in *some* members of the population and not others?' Is there an answer other than genetics available?
Chris M
Chris M 11 dagar sedan
Still waiting. When did bacteria have gain in function/information and become a dog? Nowhere in the world does that occur. Besides all fossils having soft cell tissues in them is clear and abundant evidence evolution does not occur. There are not enough trillions and quadrillions of years for "mutations" required to have gained in function as soft cell tissues have how long a life? Your experiment does nothing but proves the existence of a "pre-programmed will to survive" or immunity as your body posses. Mankind did not evolve from apes or will they evolve into something other than humans. Transitional fossils? Where?
Crispr CAS9
Crispr CAS9 11 dagar sedan
@Chris M "That is the events evolution proposes." No, it isn't.
Chris M
Chris M 11 dagar sedan
@Crispr CAS9 That is the events evolution proposes.
Crispr CAS9
Crispr CAS9 11 dagar sedan
"When did bacteria [...] become a dog?" If bacteria became dogs, that would disprove evolution. You understand that, right?
Vinícius M
Vinícius M 11 dagar sedan
E.Colocaust :(
Chris Carriere
Chris Carriere 11 dagar sedan
Isn't it possible to try and make bacteria evolve into eating stuff we treat as garbage ? Like idk all the "bad" gases etc. Could solve a lot of problems
Stephanie Hyatt
Stephanie Hyatt 11 dagar sedan
I hate to mention this, but unless you are composting your paper towels, use re-usable microfiber cloths that you can throw in the washer. I use them occasionally, but rarely for cleaning.
Ismael Abufon
Ismael Abufon 12 dagar sedan
12:31 ... I 100% read Gattaca haha
Ismael Abufon
Ismael Abufon 12 dagar sedan
The lucky 1% gets to reproduce..... like the super rich haha
Peter Smoyer
Peter Smoyer 12 dagar sedan
Space itself is the thing that is evolving. All the matter, energy and radiation that exists in the universe at one time fit into something the size of a soccer ball or perhaps a football stadium. It all came from space. It is all here to benefit space. Space would not be as expansive as it is without the matter and energy it created in less than one second.
Antisocial Atheist
Antisocial Atheist 12 dagar sedan
I could sit down and talk with that guy for days lol. Very interesting and informative. If I could meet him I'd have to thank him for his work
Plum Amazing
Plum Amazing 12 dagar sedan
The best example of this kind of research is a really old story by the author of 'Game of Thrones' George R.R Martin. It's one of his best. It's a short story called 'Sandkings'. There is the book on youtube. Also the outerlimits video also on youtube. Sorry I can't put up links you'll have to search youtube. Very scary one to read. I suspect you will like it. muhahaha
Falsimer
Falsimer 12 dagar sedan
When the music kicked in I got a wave of nostalgia. I saw your source, but what it reminded me of was the Majora's Mask Milk Bar Theme. The most simultaneously upbeat and sorrowful music I can think of right now. Only the first 5 or so notes of your music matched the Theme, but it was enough to spark my memory.
Benjamin Márkus
Benjamin Márkus 12 dagar sedan
that transfer process was suprisingly lax! :o i would’ve thought you’d want to do this under suction cabinet with purified atmosphere and such.
sokin jon
sokin jon 12 dagar sedan
“33 years ago, even on weekends ever since ..” Bacteria are annoyingly hard workers.
mbbs2008
mbbs2008 12 dagar sedan
Perhaps this is adaptability? Quiet possible that bacteria have different (higher) adaptability potential then higher animals?. The bacteria still remained "bacteria" at the end, even after 30 years relentless "experimentation", and did no really "evolve" into a new species? Am I missing something?
mike powers
mike powers 12 dagar sedan
This is a great experiment in micro evolution and also acts as an experiment in macro evolution as well, if macro evolution were possible there would be signs after 70k generations but, that is not the case. No matter how resilient or mutated these samples are they are still E. coli bacteria and not E. coli/??? Or something completely different.
sokin jon
sokin jon 12 dagar sedan
stove, etc. It's WAY too wasteful to use paper towels! SHAME on you, for promoting such wastefulness!!
Can Humans Sense Magnetic Fields?
13:53
Veritasium
visningar 2,4mn
STRONGEST GRIP CHALLENGE! #shorts
0:56
The Infinite Pattern That Never Repeats
21:12
The Simplest Math Problem No One Can Solve
22:09
How to Slow Aging (and even reverse it)
21:10
This Unstoppable Robot Could Save Your Life
14:30
These are the asteroids to worry about
20:06
How One Supernova Measured The Universe
13:42
The Discovery That Transformed Pi
18:40
Veritasium
visningar 4,7mn
STRONGEST GRIP CHALLENGE! #shorts
0:56
Ck Oo kusoo dhaweeyay Youtube Ex Wife ....
10:02
King Ck Films & Vlogs
visningar 310tn