Using Genomes to Track the Evolution of Life on Earth and Beyond

Рет қаралды 28,745

University of California Television (UCTV)

Күн бұрын

James A. Lake, Distinguished Professor of Molecular, Cell and Developmental Biology and Human Genetics, is a UCLA scientist whose research has focused on understanding molecular evolution at its earliest stage. In the course of his career, he has invented new techniques and often challenged current scientific views. This prestigious UCLA Faculty Research Lecture focuses on the changes in understanding evolution. [4/2012] [Show ID: 23421]
Donate to UCTV to support informative & inspiring programming:
www.uctv.tv/donate
More videos from: UCLA Faculty Research Lectures
(www.uctv.tv/ucla-faculty-rese...)
Explore More Science & Technology on UCTV
(www.uctv.tv/science)
Science and technology continue to change our lives. University of California scientists are tackling the important questions like climate change, evolution, oceanography, neuroscience and the potential of stem cells.
UCTV is the broadcast and online media platform of the University of California, featuring programming from its ten campuses, three national labs and affiliated research institutions. UCTV explores a broad spectrum of subjects for a general audience, including science, health and medicine, public affairs, humanities, arts and music, business, education, and agriculture. Launched in January 2000, UCTV embraces the core missions of the University of California -- teaching, research, and public service - by providing quality, in-depth television far beyond the campus borders to inquisitive viewers around the world.
(www.uctv.tv)

Пікірлер: 52

@TheEtrel 12 жыл бұрын

thanks for making this videos free for all !!!

@spideyrolan 5 жыл бұрын

Amazing stuff

@erictsfx 12 жыл бұрын

fascinating, indeed

@steventaylor8608 5 жыл бұрын

Survival of the scrunchy paper.

@italouruguayricano 12 жыл бұрын

Physicist turned biologist, wow. I am following a similar path.

@wishlist_12wishlist55 5 жыл бұрын

Who is the gentleman asking at 49'36"?

@47f0 12 жыл бұрын

Anyone wonder why we're screwed? This video - 67 views. S&W 500 Magnum Vs. Swimming Poo - a quarter-million views. . We are doomed.

@zitools 6 жыл бұрын

swimming poo would be better than pool...makes me think that someone needs to be a sharpshooter to hit a poo log.

@eleonoregrossmann1311 5 жыл бұрын

Pity that such an excellent presentation has such poor sound quality. What happened? Did the technician let a mike open that should have been closed? The noise is unbearable. That might be the reason why there are not many views.

@katiekat4457 5 жыл бұрын

Eleonore Grossmann is was the piece of paper he was crinkling in his hand. And he would occasionally make those loud mouth saliva noises. But almost all of the noise was from the paper he had in his hand to remind him of what he wanted to say. As time went on they turned down his mic some so it wouldn’t pick up as much of the noise. Plus as he kept going he must have gotten less nervous because he was crinkling the paper so much with his hands.

@fokkenhotz1 5 жыл бұрын

when you figure out how the tree of life should be indexed i think Microsoft Windows should follow suit.... ya. Thank you for engineering biofuels for us... you are a wonderful lot.. keep turning in those scrunchy papers

@fmn2628 8 жыл бұрын

Excellent video. It makes me really sad how from its publishing until now there are only 4700 views. How uninterested people are in science is mind boggling, yet put a stupid cat video and it easily gets a million views. How much work is ahead of us...

@alejandroquintero9479 8 жыл бұрын

I totally agree

@plumviper 7 жыл бұрын

fmn2628 cat videos!?!? Please provide a link. I was starting to think critically for a second!

@bouldersoundguy 6 жыл бұрын

Simple explanation: atrocious audio.

@suelane3628 6 жыл бұрын

Cat videos are cute! However it does shock me how shallow people are. We are supposed to be an intelligent species. Maybe we should change our scientific name.......any ideas?

@mickelodiansurname9578 6 жыл бұрын

fmn2628 It was never the case that humans were curious enough to crave knowledge or bright enough to know how to get it. It was always the case that a truly tiny percentage of humanity were like that. Everyone else is just along for the ride.

@wildreams 12 жыл бұрын

@47f0 I thought it was really a swimming "poo" got me excited for a while.

@citizenschallengeYT 4 жыл бұрын

53:00 It's a shame there wasn't any explicit acknowledgement that it's environmental pressures and changes drive evolution. It's all about adjusting to the ever changing world we exist within.

@thathobbitlife 5 жыл бұрын

10k views in 6+ years. I wish humans wanted to educate themselves in their free time, rather than watch vine compilations and pewdie pie lol

@haroldolmos 5 жыл бұрын

Heather Huber cc

@eschwarz1003 5 жыл бұрын

yes super fascinating; encouraged to find out even more.

@dcscccc 7 жыл бұрын

hi. an interesting question: according to evolution fly and mosquito split off about 250 my ago. fly generation is about less than one month. so even if one generation mean only 1 new mutation we will need only 10^8 month to change his entire genome. or about less than 10^7 years. so fly and mosquito are suppose to be different in about their entire genomes from each other. far from reality.

@suelane3628 6 жыл бұрын

You've missed out natural selection.

@mickelodiansurname9578 6 жыл бұрын

dcscccc see the Price Theorem for an answer to your question. Mutation is only relevant if it is pushed one way or the other by a selective pressure. Many entire families of species change very little whilst other change radically... Its down to the genetic load possible, the allelle frequency, the stability of the fitness value and about 20 other basic variables etc. So if I started with a population of flies 250 million years ago and entire climatic changes did nothing to affect their fitness score one way or the other...well there won't be any changes.

@katiekat4457 5 жыл бұрын

dcscccc you are also missing out with your math. There are billions of base pairs. And you miss out on the natural selection part. Meaning a mutation is more likely to either cause no change or to cause a bad change. If it’s a bad change then the fly dies before it can reproduce so that mutation is gone. Like it had never happened. So the fly generation still has no mutations for that generation because the fly with the mutation died and with it went the mutation.

@trishayamada807 5 жыл бұрын

sue lane and the big 5 mass extinction events.

@trishayamada807 5 жыл бұрын

Mickelodian Surname exactly. And because there were at least 5 mass extinctions, only living things that were able to adapt quickly went on. Those extinctions gave us diversity.

@johnlawrence2757 5 жыл бұрын

In relation to the activities of evolutionary biologists in genetics ( a highly specialised field) their procedures cannot be described as in any sense of the word “scientific”. They have an entirely pre-determined agenda and they seize on any speck of material they see as consistent with this agenda. They neither explore alternative explanations for this item, nor do they seek actively for evidence that is not consistent with the agenda The evidence they accumulate is nowhere near sufficient to underwrite the conclusions they reach, and their research conditions are invariably sub-standard So objective observers object to any and all claims that “evolution” is a proven fact; that “it isn’t even bring discussed”. Whilst they may be veering round to agreeing that Creationism is more than a possibility, they still cling to the concept of mechanisms that rule out an omnipotent deity, even though much of the genuine evidence of recent years, particularly in genetics points more and more to this being the case

@Fomites 3 жыл бұрын

Stop taking that stuff and do something useful.

@maximuscomfort 6 жыл бұрын

The Blue Whale ovum and the Star Fish ovum same size dose it for me.

@MisAlizana 6 жыл бұрын

lol

@qwertzasdfg8576 5 жыл бұрын

oh god,how i miss predators walking about

@47f0 12 жыл бұрын

@wildreams - Many apologies. I was circumcised at birth, and since then have had a regrettable tendency to truncate my copy 'n pastes. . The video, of course, should be "S&W 500 Magnum Vs. Swimming Pool". Which, of course is quite different. But it's still kind of on-topic. In English, as in DNA, it's remarkable how the insertion, deletion or modification of one letter can make all the difference in the world.

@zitools 6 жыл бұрын

you're a funny dude. haha.

@footfault1941 4 жыл бұрын

"Toxic waste" !! Recycling is our innate activity, folks!

@marceloribeirosimoes8959 6 жыл бұрын

Please, show me a kind of animal generating a different kind of animal. For exemplo, a bear that came from dogs or monkeys, or a bird that "used to be" a reptile... ...I am really interested on proves like that. And I am NOT trying to cause any disturb here at all. The problem is I am very tired of this. So, let's get to the point, right? "We don't know" is not a evidence basis... ...unless you're talking that you discovered how life "appeared" (started)...

@TK-fd3qt 6 жыл бұрын

ppl that think evolution should be prooven with 'bears to lisards' already ARE a waste of ALL space...by missing already in begging what is evolution. you simply can't get it. first accept that not all man are equal.

@marceloribeirosimoes8959 6 жыл бұрын

"People" that are evolved chimpanzees can't notice an irony when they stumble on that? Please, Mr. Tomas Kosir, could you point me to an animal kind to a different animal kind link or something like that? The first misconception here is your, mr. Kosir. The differences between two human beings, same gender, same family, living in the same house are easily perceived and can be documented. No problem with that. But there are two human beings, not a bear and a lizard, right? Or you can't notice the difference from your comparison...? So, let's take it short, please, let me see what you got... Point me to a proven LINK between two different animal KIND, please. Let me see if your beliefs are based on reality or if you believe in fairy tales... ...oh, if you can find it, please, tell me what's the result number about life exist by chance probability... ...it will educate a lot of "genius" around this place...

@jasonwiley798 Жыл бұрын

@@marceloribeirosimoes8959 point me to a link that proves intelligent design

@marceloribeirosimoes8959 Жыл бұрын

@Jason Wiley HI Jayson, I really hope you're doing very well. I could say "open your eyes," but maybe it would demand enough sensibility and perception, but, of course, you are not used to it... Please, could you point me to any living thing made from non-living things with no transplant from a living thing? Or maybe you could try to explain why everything is the way we observe them (and interact with each other the way we can observe). Can you see that even if you get any chemical components combination, there will be something missing? Don't you know the plethora of measurements that makes this planet like it is? Air in movement, cold to hot, water floating above our heads, belts around us avoiding many hazardous things from space, the rain cycle, tastes and your tongue, colors and light frequencies and eyes, a variety of smells and what they provoke, etc. Everyth8ng in perfect balance. How many things involved on any one of those processes could become useless if it were not as "complete" as they are? If you can't see it, I'm sorry. I can't help you. I can do one thing Wish you the best. P.S.: I'd avoid mentioning DNA