Unraveling Our Genetic History | Garrett Hellenthal | TEDxGoodenoughCollege
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- čas přidán 19. 06. 2024
- Is there such thing as racial purity and are any of us genetically unrelated? Garrett shows us how DNA modelling can pinpoint the times in the past when different populations in the world have intermixed, calling into question our assumptions about homogenous racial identities. In fact, humans all over the world have been exchanging DNA with each other for a very long time…
Garrett Hellenthal is statistical geneticist and current research fellow at University College London, focusing on applying mathematical models to DNA data. Garrett received his PhD in Statistics at the University of Washington, after which he continued post-doctoral work on genetic variants and increased risk in diseases at Oxford. Currently, Garrett constructs statistical algorithms to describe the genetic architecture of different human groups, and using DNA to infer human history, which includes elucidating how genetic patterns vary across world-wide human groups and identifying the factors that contribute to this variation.
Garrett has created software that can pinpoint times in the past when worldwide and local populations have intermixed due to invasions, migrations and other interactions, highlighting how all human groups appear to carry links to other genetically different groups, often from quite far away, attributable to the many population movements over the centuries.
This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at ted.com/tedx
I really appreciate the statistical colour graphing to explain and show our genetic ancestry, migration, inter-breeding, and group locations. That you put this all together statistically made it easier to understand than some lengthy documentaries I have watched. Thank you.
Diana Boughner totally biased against whites. right good video. human ancestral roots are African. mid northern.. spread across the rift Valley and into fertile Cresent. then split west North and east to far east. northern latitude humans took on lighter complexion as equatorial kept their darker ones.
the inuit came from Mongolian and eastern russian Asian ancestral background and spread into North America only 20000 years ago during the last glaciation..not enough time to change complexion.
the Asian look, came from isolation as did other races of people definitive to the region inhabited by them..
simple. not this white conquest crap he spews
big ass dude: it is the genetic DNA statistics collected from humans worldwide and then grouped into colour graphs. I don't see this as biased at all. Like he says, we are all related due to intermixing our DNA with other cultural groups, which is still a rampant human character which will ultimately end all racism because there will be no unmixed (actually less mixed) race of people to target as racist. I sense you are a racist.
Yes those Anglo Saxon did get down I mean in a nice way with the Locals no straight away they were 100% Anglo Saxon between 449-585 then after than bobs ya uncle.
Remember- Use the fewest number of words possible. Be direct. Be concise.
i love hearing her speak, every time it’s just as good as the first
brilliant and humorous.
Nice talk. I bet it's pissed some people off, but who cares? Keep finding out more and sharing the knowledge with the rest of us. Thanks
very nice presentation
Fascinating...
From more recent studies it is thought that both Kalash and Northern Europeans have common origins from the Yamnaya people, who are the original speakers of the Indo-European languages
People who like this will also very much enjoy Spencer Wells work. He has CZcams talks and also the excellent Journey Of Man show. Check it out.
tough crowd
Damn that crowd is rough
TLDW: People who "care about trying to preserve the genetic purity in their part of the globe" should stop worrying because it's too late.
Thing is, he's just attacking a straw man. The ideas that people like this "genius" label as anti-immigration and xenophobia, are not ideals of genetic purity. Oddly enough, the majority of people who care about genetic purity are anything *but* white nationalists. No, the ideas the "genius" thinks are dumb and evil are the ideas about cultural purity. Not all cultures are of equal value, even to their own people. Diversity is not an inherent virtue. There is nothing inherently better about a diverse society compared to a homogeneous society. Why is the world clamoring to migrate into the West, but most in the West never consider migrating to any of these other cultures? We don't care about *genetic* purity, dear genius. We care about preserving the values and mores that make us who we are; the culture that makes us the envy of the world.
One inherent virtue of diversity is resilience in the face of novel problems. Even if you don't like trying new food or reading new stories, you should value diversity for its role in societal risk aversion.
Gary Beck That's a hypothesis.
YOU'RE A HYPOTENUSE
Well said
Pyramus And Frisbee!!
I'd love to see this done with plants.
fantastic lecture mate. 3 billion long sequence.. wow!
And now, consider a much more exhaustive statistical sample of let's say 7 Billion people, Yes. 21 Billion Billion base pairs of nuclear DNA segmented in 46 chromosomes. Or said differently 7 Billion people times 46 chromosomes, so 322 Billion Chromosomes to sort through, and catalog and classify before even daring to put forth the linkage of our selves (individually) to our own 10th generation back, our 512 super-al parental "parents". Then dare we retrograde back to like 10,900 B.C. at the perceived end of the last ice age and say wft? At some point one gets the definite feeling that "genetic purity" disappeared at least 10,000 years ago, or even 5,500 years ago. As one said the issue really is that of cultural purity, which is a concept in reality is also a mythos in itself.
Asking the real hard question, "What really is in your Jeans?"
These Genetics pursuit of our human origins, even individually is in the first ten seconds of a new born infant in its scientific maturity. Let's wait many more decades at least before we start trying to make any political policy on account of our 'racial purity' arguments.
It really is time to throw away the Racial theories of the past 5,000 years and start over.
This is very interesting, but the guy's rapid speech pattern makes it tough to follow for a novice like me!
So far 35 pure blooded stable geniuses have disliked the video.
I think people need to be patient and stop complaining that he needs to get to a point. Be patient and just listen.
Great video. Most of y'all got short attention spans or not knowledgeable in history and genetics
Thank you. It's nice to know that America isn't the only melting pot. The song "It's a Small World" is so true. The whole world is a melting pot. That's a wonderful thing.
Why do all Ted talks now need to be like comedy standups?
7:41
im not worried about peoples genes its their cultural practices that scare me, i dont know about the rest of you but i am kinda "attached" to my head and like to treat women with respect its not peoples genes doing these things its culture, i enjoyed the video and the information was interesting then you turned it political and ruined it
think you interpreted his comment as political, rather I interpreted the comment as fact...did he comment about legal or illegal immigration? if not then its not political just that it happens regardless of governments and small local society districts [be that controlled by a small state or a huge one]...agree with you otherwise; he did not go into detail about local areas of EU which would have been most interesting -- i.e. northern Africa/middle east and southern EU [Spain, Italy, France, etc.] and more
If the motivation hadn't been political then he wouldn't have brought it up at all, especially the part accusing those who wish to reduce immigration of wanting to maintain "genetic purity".
well let's not pretend that only men from certain places disrespect women. As far as I'm concerned, I'm at risk of being beaten up by a guy no matter what his culture is. No point acting all superior. There are respectful men in all cultures.
maybe the Bast people are speaking Neanderthal
He is coming to too much of a simplistic conclusion. First of all, the similar dna shared between the Kalash and Northern Europeans is from shared steppe ancestry from what is now Kazakhstan. Hardly earth shattering or a sign that we should all be mixing with each other. Second of all, the other examples he gives are generally consisting of two races rubbing against each other while existing in the same continent over thousands of years. Most of his examples consist of Eastern Europeans and Middle Easterners colliding with East Asians. Hardly surprising. And yes, the Spanish were directly across the Atlantic Ocean from Central America. They were bound to collide with the people there at some point. There are Mayans with Spanish dna. There are Hungarians with Central Asian dna. There are Thai people with South Asian dna. There are Saudis with African dna. All the examples I gave are of two races in close proximity to some degree mixing with each other over long periods of time. How does any of this justify the modern day mass immigration from the third world to the first world? How does this mean that tomorrow’s Brits are obligated to be part Indian and African? How does this justify Japan letting in millions of Syrians or Iranians, mixing in with its own native population? He is comparing apples to oranges.
That was not the point, he was just saying that the theoretical base of genetic purity is not true. Also, if you at Japanese, they mostly originated from migrants from Korea in the last part of fist millenium bc. The choice if Japan should or shouldn't accept migrants belongs only to Japanese people, not other
Kalash people are descendent of Alexander the Great's army.
Hey, look what people used to think years ago that's been proven wrong since then. It was interesting, but with all due respect. What is the point in discussing a racial theory that's been proven as wrong?
is it theory or fact
There's no biological way whatsoever to tell when Mayans got their 19% similarity to spaniards. Statistics only works (=reliably) when starting from a deterministic physical model (e.g. a known ancestor post 1500AD or a 1st-hand production process) and then putting probabilities on the average, the median and deviations from these two.
They already have multiple deterministic models... like Spain.
Zofe...thought the same about Mayans...but disagree in part because he did not say where their DNA came from PRIOR to the invasion of the Europeans...rather that history after that time shows the newer Mayans had mixed DNA...makes sense; also the Catholic religion and Europeans did an excellent job of destroying the Mayan history and its people [might this be similar to a religious ideology today?] ...live long and prosper
Must be an autistic gentleman... very simplified presentation though, good work.
I can't concentrate on what he sais since he walks forward and backwards constantly :D
yyyyyyy
Save the political commentary. The argument for restricting certain groups of people from accessing the territorial United States is a cultural one, not a racial/genetic one.
While I do agree with you, that guy was in England.
But not complete.
4 minutes in and still wondering what the point is. He should get there sooner.
What he is saying is that 60 70% are from the Bell Beaker Culture that came in 2.500BC the rest of English is 10 40% Anglo Saxon he is right so the Anglo Saxons did get down with the Britons then wink wink
Its great ive seen the face of Briton Im Geordie they said we are 78% Anglo Saxon and the rest is pure Briton. What was left of the Brythonic Kingdoms.
Good enough for what? Really?
rasism
Intro was painful, not funny lots of remaining questions not a boy genius
Identity politics & social justice bs have infected science.Sad.
Oh dear, every one of his attempts at humour was poorly received.
pretentious indeed
Fix your shirt collar, buy a razor, or get out of the gene pool business.
Boring and what's the point?
tough crowd
7:57