Genetic variation, gene flow, and new species
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- Опубліковано 3 жов 2024
- What is the connection between genes and biodiversity? Learn how
genes determine an individual's traits, how mutations can change those genes, and how sexual reproduction recombines genes.
For more biodiversity tutorials, visit bit.ly/cas-khan.
Skip to 7:07 if you're just here for a reminder of gene flow. You're ideas of the term are probably right though considering the definition is in the name.
the best video i've seen so far explaining this stuff. wish you could stuff more information into this!
It's really one of the best lecture ever
helps me so much with my exams thank you
you provide unnecessary information. but above all your video is the best.
Best and most understandable video so far
Very easy to understand! and great illustrations. this helped me a lot. I'm in my first year of my bio major.
this video was very helpful in understanding every aspect of each subtopic amazing job
well explained in a simple way, absolutely loved it.
you just saved my hnrs bio grade
you cleared all my doubts on evolution
This is so helpful thank you😭
Thanks for valuable information in a simple way
Very clear, very nice illustrated, great movie on this (not so easy) subject!
Thank you science teacher
Great video, helped me out a lot for my test.
this help me so much with my open house!! Thx u
Absolutely understandable
Wow so much info I can't...
Easy to understand.. excellent
thanks for the amazing vid
Thank you so much..This lecture is Excellent 💕👍👍
Please Make more Such educational videos.. Thanks
It really helpful may God bless you
I don't agree with the evolution theory (I'm watching this video to make a presentation to refute the idea), but I will say this video is well made and well explained. It covered all the information I needed. Excellent job :
What are the difference between Intra-individuals (Qi) and inter-individuals intra-population genetic variance and what could it tell us?
Great lecture 💥💕
Great video and nice job! Thank you!
I do have a question regarding the "randomness" -- when we look at how the cell reproduce,how DNA replicates and how the stars and atoms move, we really don't see too much randomness there. What is your definition / examples of randomness? Many Thanks!
If 2 human populations were separated without the ability to interbreed, with very different environments, how long would it take for differences to develop so that they could not interbreed if they met?
I really like the video
Please can you teach chapter environment class 10
great video!
Really useful thank you
Randomness is when mutations or gene restrictions occur over a long period of time.
Let's look at what some secular scientists have had to say that disagrees with evolutionism.
We are told that beneficial mutations are an essential mechanism for evolution to occur, but H. J. Muller, who won a Nobel Prize for his work on mutations, said....
"It is entirely in line with the accidental nature of mutations that extensive tests have agreed in showing the vast majority of them detrimental to the organism in its job of surviving and reproducing -- good ones are so rare we can consider them all bad." H.J. Mueller, Bulletin of the Atomic Scientists 11:331.
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Anyway, mutations are isolated, random, events that do not build on one another like Legos, and certainly have no ability to create totally new DNA as, for ex., would be needed to turn a leg into a wing.
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As for natural selection, it does not lead to evolution, either. What does NS select from? What is already in the genome. It shuffles pre existing information or may cause a loss of information, not the new info you would need to turn a fin into, say, a foot. That is why no matter what it selects from in a fish or bird or lizard or bacteria or monkey or tree or flower you will still have a fish, bird, lizard, bacteria, etc.
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But, if you can, give data - not just theories presented as facts in the conveniently invisible past - that a Life Form A turned into Life Form B as the result of NS. In other words show that a species in any genus went to the next level in the Animal Kingdom (ditto for plants) to become a new Family. There are trillions of life forms on this planet. We're told it happened in the unverifiable past, over and over and over.
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Why don't we see any species in any genus transitioning to become a member of a new animal or plant family today?
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If there is no evidence that any life form's descendants transitioned to become a different family than its ancestors, then there is no evidence for evolution. It's just that simple. But feel free to cite data revealing any such evidence if you can.
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Bowler, Peter J., Review of In Search of Deep Time by Henry Gee (Free Press, 1999), American Scientist (vol. 88, March/April 2000), p. 169.
"We cannot identify ancestors or 'missing links,' and we cannot devise testable theories to explain how particular episodes of evolution came about. Gee is adamant that all the popular stories about how the first amphibians conquered the dry land, how the birds developed wings and feathers for flying, how the dinosaurs went extinct, and how humans evolved from apes are just products of our imagination, driven by prejudices and preconceptions."
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"There are only two possibilities as to how life arose. One is spontaneous generation arising to evolution; the other is a supernatural creative act of God. There is no third possibility. Spontaneous generation, that life arose from non-living matter was scientifically disproved 120 years ago by Louis Pasteur and others. That leaves us with the only possible conclusion that life arose as a supernatural creative act of God. I will not accept that philosophically because I do not want to believe in God. Therefore, I choose to believe in that which I know is scientifically impossible; spontaneous generation arising to evolution." (Nobel Prize winner Wald, George, "Innovation and Biology," Scientific American, Vol. 199, Sept. 1958, p. 100)
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"The pathetic thing about it is that many scientists are trying to prove the doctrine of evolution, which no science can do." (Dr. Robert A. Milikan, physicist and Nobel Prize winner, speech before the American Chemical Society.)
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"Hypothesis [evolution] based on no evidence and irreconcilable with the facts....These classical evolutionary theories are a gross over-simplification of an immensely complex and intricate mass of facts, and it amazes me that they are swallowed so uncritically and readily, and for such a long time, by so many scientists without a murmur of protest."
(Sir Ernst Chan, Nobel Prize winner for developing penicillin)
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On this webpage you can see Nobel Prize winning scientists, other secular scientists - including some world famous evolutionists - admitting there is no evidence for evolution. You can see them calling evolution a kind of religion, something that leads to "anti knowledge", etc. Notice how many of these secular scientists acknowledge evidence for a Creator.
freerepublic.com/focus/f-bloggers/1435562/posts
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Expelled: No Intelligence Allowed shows the politics of Neo Darwinism which harasses and expels those in academia and the media who even hint that there MIGHT be evidence for a Creator.
ua-cam.com/video/4HErmp5Pzqw/v-deo.html
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As a former atheist and evolution believer, I once had no idea what was outside the box of what I had been told over and over since grade school
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Anyone reading this: You are not an ape update. You were created in the very image and likeness of the Creator. He is your Father and loves you and wants you to know Him, and love Him too. Why trade in those fantastic truths for a bunch of mumbo jumbo pseudo science that even secular scientists can't get consensus on? Rhetorical Q.
is this video also about animal population genetics
Best of the best!
Best one 💖
Video unclear my head is in a washing machine
I hope your toes get better
im watching this from khan academy
hi im doing a literature review about genetic variation, can you help me find relevant reading for this topic?
damn, hope it went well
nice
Lovely
Decent.
Skip to 7:18 to see enormous fish delete Central America in a bizarre mating ritual!
Skip to 8:16 to see the egg on my face
Best
Jeff Goldblum? Is that you?
Hi! I liked the vid! I've been trying to find for a UA-cam vid like yours that really informs the topics in this UA-cam vid. 🙌 👩⚕️ The part at 1:15 is my favorite. Your explanation totally is like the content of this new health enthusiast Doctor Ethan! His explanations are for sure informative and I learned a lot for school. He is a new med student.
You should see his UA-cam out and give the health enthusiast a like! ➡️ #DoctorEthanMedLife
5:40
to much info in one vide -____-
too
No way. It's a very basic overview that covers key concepts you need to know going into a class or section of a class on population genetics and basic evolutionary theory. He actually left a /lot/ out. I'd know.
too much unintelligence in one comment
Hi there. I love this video and the Cal Academy, but I think it is important to remove the part at 5:03 about eye color in humans. Eye color is controlled many genes with many alleles on multiple chromosomes. The example of eye color being controlled by two alleles at one locus is rife throughout middle school and high school textbooks. This example needs to be eliminated from educational materials so this misconception is eradicated and does not continue to persist. I respectfully request that the Academy replace that portion of the video with another example of a trait that is controlled by one gene and two alleles.
Hand lines are genetic
On the last pair of chromosomes XX is for female and Xy is for male.
When he showed the 46 chromosomes he only showed the male.
(I'm just mentioning this for the younger audience who aren't familiar with chromosomes yet.)
why this guy sound like Jeff Goldblum :|
I was literally thinking that...
Nature is harsh 😨
ALLAHU AKBAAAR!
LOLWTFBBQz N. Nnnn
Elham
LoL i was just kidding..
Okay I'll delete my comment..
So gene flow supports interracial marriage?
who else got lab in an hour
Genetic diversity in one ethnic group. 3 anthropological types are clearly visible: northern Europeans, southern Europeans, Eastern Europeans (with an Asian admixture)
Real Russia/Provincial Russia. Rostov on Don region, Donskoy small town, population: 13,648 - ethnic russians 91%: 30% Don сossacks (russian subethnic group - semi-militarized people for military and border services in Russian Empire).
Graduation high school ceremony and concert. *olnNpJeKxjQ*
PS: Cossacks - Originally Wild Nomads who were employed for military border service in the Muscovite Kingdom. The ancient tradition of the Cossacks is to steal the most beautiful girls in Poland, Iran (Persia) and Turkey, etc (from Military Companies). The distinctive character trait: the unquestioning subordination of the younger to the elders and iron discipline, military democracy(absence of serfdom)...
who remember trump in this video hhhhhhhhhhhhhhhhhhhhhh
survival of the fitter ha
How many indians?
OOF??
uhhhh, too much info. I don't get it. It has no meaning. IT MUST HAVE A MEANING, OR ELSE. Therefore I must create an alternative story that is easy to understand. Except, it is made up and not true...