Sriram Sankararaman: Recovering Signals of Ghost Archaic Introgression in African Populations

[@Cobbido]

This is getting a suspiciously small amount of air-play compared to other revelations of archaic admixture.

[@ayodejiolowokere1076]

Only in your head.

[@kenankomah1]

There is nothing suspicious happening here. This gets less attention because the results are more speculative as they are based on statistical analysis and not actual DNA like in the case of Neanderthals.

[@The_Space_Born]

That archaic ghost admixture in subsharan Africans explains why they look and behave like a totally different species from the rest of humanity.

[@The_Space_Born]

That's why the (mainstream) media is avoiding this topic like there's no tomorrow!

[@maktiki]

@@The_Space_Born You do not understand the research lol

[@johngreally9599]

We are best served when DNA archaeologists are well-funded and quite relentless. Feel free to tip up whatever apple cart proves to be an obstacle. Paint that truth. Thank you Sriram Sankararaman and colleagues.

[@TherealRTZ973]

2:30 Has there been any developments as to where the potential unknown hominid is from?

[@vape79]

It has been debunked

[@TherealRTZ973]

@@vape79 Source please!

[@chandrasekarselvaraj2109]

Nice explanations thank you

[@2killnspray9]

Is it proof that some populations are more evolved than others? [Edit] I'm not talking about generalizing and doing race comparaison. But statistically inside some racial populations we can find different levels of what we call "modern humain" (Homo Sapiens) some have less and some have more. But the fact that in some African populations (maybe more in isolated tribes like the hunter gatherer and pygmies) the % or archaic or very archaic humans is very high in comparaison to others

[@topographicmapofbrazil]

If by more evolved you mean higher amount of positively selected genes mutating/evolved adaptively to ones environment then yes sure some races are 'more evolved' than others I guess. But if this was the case it would also mean chimpanzees are more evolved than humans and the 'most evolved' race would go to Aboriginals/Melanesians. You're making the very common mistake most humans make in thinking apes such as chimps, gorillas etc are 'less evolved' than us when that really isn't the case (it's the exact opposite lol .) Archaic DNA doesn't mean less evolved genes it just means they have genes coming from a separate population. And if this isn't enough for you the human population with the least Archaic DNA are East Africans (specifically Horn Africans and tribes such as the Dinka and the Maasai not the Bantu populations that inhabit parts of East Africa today) meaning by your odd definition of less evolved = more Archaic DNA East Africans inhabiting countries such as Somalia, Ethiopia, Eritrea etc are the most evolved human race on the entire planet. So make of that what you will.

[@lif3andthings763]

You realize archaic human dna is also neanderthal and denisovan dna right?

[@IntroducingMrLucci]

@@lif3andthings763 Neanderthal & Denisovan is not at all Super Archaic as this was classified. It's so archaic they didn't think it were possible to still exist in the timeline to be so close to primates. It's because this population remained isolated south of the Sahara, and based on the date of introgression this lend to a back migration of modern anatomically correct humans into Africa that interbred with the Homind populations that inhabited it. This is also why there's hardly any anatomically correct date skeletal remains found in this region of the earth prior to 40,000 years ago, yet is plentiful in homind remains, and this at the same time anatomically correct humans were already spread across the globe and those dated skeletal remains are plentiful.

[@ayodejiolowokere1076]

@@IntroducingMrLucci super archaic? What does that even mean? No one suggested anything about living fossils. The population diverged away from the shared ancestor of neanderthals and denisovans. Your notion that it's closer to non human primates is just nonsense. Considering also that split was millions of years ago, you've kind of shown you really don't understand this subject matter.

[@topographicmapofbrazil]

@@IntroducingMrLucci Thats so very false, did you even watch the lecture? This species diverged from humans 625,000 years ago (meaning they’re a lot closer related to humans than they are chimps, gorillas, orangutans etc.) also that’s only ever so slightly before Neanderthals/Denisovans diverged from modern humans which is about (500-600k years ago.) The reason it’s called a ‘ghost’ species is because the species hasn’t been discovered yet which is due to fossils in Sub Saharan Africa rapidly decaying making it difficult to extract feasible DNA from them. The scientists here used a method where they could detect archaic DNA in a population without an archaic population source.

[@_Thoughtful_Aquarius_]

Who else had to go through an advertisement for a movie about a seven year old feminist sex doll in order to watch this lecture? WTF is happening?!?

[@TheUltimateNatural]

lolwut? I have uBlock Origin.

[@_Thoughtful_Aquarius_]

@@TheUltimateNatural , before this lecture played, I was shown an advertisement for a movie starring a seven year old feminist sex doll.... *The thought that so many resources went into such a production of trash.* I think that's a pretty good indicator that society in the USA deserves a revolution.

[@botgod6264]

No ad at all here, hehe

[@hazzah5572]

I thought you were kidding /watch?v=IKyZWJ75nDM Unbelievable. Very sad indeed.

[@angrynorman8378]

@@hazzah5572 The U.S has become the Great Satan.

[@naimulhaq9626]

Does introgression with Denisovan and Neanderthals triggered the evolutionary leap in Homo sapiens?

[@raempftl]

Naimul Haq It happened after that leap.

[@skellagyook]

No. Homo sapiens predate that introgression. And (it is known from archaeology that) advanced cultural practices associated with Homo sapiens where already taking place in Africa before the Out-of-Africa migration (as attested/known, for example, from early African sites like Katanda, Blombos, Pinnacle Point, Sibudu, Adum, Gademotta, Border Cave, Dieplkloof, Olorgesalie, and others).

[@naimulhaq9626]

@@skellagyook Homo sapiens didn't become humans in one leap of evolution but many leaps.

[@skellagyook]

@@naimulhaq9626 Perhaps, but Neanderthal/Denisovan admixture is not what made Homo sapiens modern or human or caused its "leap" (there is really no evidence of that). Homo sapiens were (and are) already fully modern/human in Africa (advanced cultures were found there and have been/ocurred there all throughout history. And non-African groups, all of whom have Neanderthal, and sometimes Denisovan, admixture, have been found at virtually all levels of sophistication and "primitiveness". Neanderthal admixture is present in all non-Africans including Europeans, Australian Aboriginals, Asians, Papuan New Guineans, Melanesians, Andaman Islanders, Native Americans, etc. And Denisovan admixture is present in Australian Aboriginals, Papuans, Melanesians, somewhat in Negritos from eastern southeast Asia, and at much lower trace levels in East Asians and Native Americans, but not in Andaman Islanders or Negritos from western southeast Asia.).

[@TheUltimateNatural]

No. That leap is likely why they outsurvived Neanderthals and Denisovans. And it was happening in Africa tens of thousands of years ago before the migration that populated much of the Old World.

[@MariaNI-yf1bz]

Thank you. I hope to see more about this subject in the (near) future.

[@diamonddiamond8455]

Either way it go Homo sapiens originated in Africa and then migrated out of Africa to other parts of the world

[@travisingram5945]

Please tell me this was pre-recorded before the pandemic. If not it sure seems irresponsible to pack people into a lecture hall like that.

[@samb443]

Theyre adults, they can do whatever they so choose. In the same way you chose to post before reading the description.

[@deathbyseatoast8854]

@@samb443 Thats a stupid train of thought and i hope you realise that. You can literally use that same argument to justify murder.

[@samb443]

@@deathbyseatoast8854 you are a stupid train of thought

[@deathbyseatoast8854]

@@samb443 Bro i can't even get mad at you. i'm just disappointed. do better, be better. You're above this shit.

[@samb443]

@@deathbyseatoast8854 literally who the fuck are you

[@panspermiahunter7597]

If these maps are correct then why do I posses 3.15 Neanderthal variants which is very high and I am 100% north west European? 97% of which British/Irish, your maps indicate lower neanderthal than Asian but DNA test show otherwise. As for Denisovan high altitude lower oxygen is a guess, they could be there for safety reasons and adapted like any human would. I really believe this presentation is a politically correct presentation.

[@SideWalkAstronomyNetherlands]

do a "bit" more studying....lol...you haven't got a clue..

[@freandwhickquest]

Asians have slightly higher neanderthal ancestry than europeans. Neanderthal admixture occured in middle east before the asians and europeans split from each other. Neanderthal genomic segments in asians and europeans are believed to be coming from the same neanderthal population. (Neanderthal remains from Iraq Amud and Tabun caves) Neanderthal DNA in europeans eventually decreased due to low level gene flow with africa. (Because of europe's close proximity to north african coasts) if you exclude these recent african admixtures, europeans have rougly equal amount of neanderthal dna with asians.

[@panspermiahunter7597]

@@freandwhickquest Rubbish, north western Europeans and how is it I have near the highest percentage and my ancestry is all Ireland and Scotland with only 3% Scandinavian., zero Asian or middle eastern, don't get your info from Google, Google are bias and trying to rewrite history.

[@freandwhickquest]

@@panspermiahunter7597 "asian" is a broad term. Current middle easterners have low amount of neanderthal dna (~1%). But east asians like chinese have like 2.4% neanderthal ancestry. Your result is indeed higher than the average european. Most europeans have it around 2%.

[@panspermiahunter7597]

@@freandwhickquest Denisovans! not Neanderthal.

[@davidparsons8906]

It's not a fact it's trick your body leave it natural