Reconstructing Native American Population History

[Locutus]

The peopling of the Americas has been the subject of extensive genetic, archaeological and linguistic research; however, central questions remain unresolved1–5. One contentious issue is whether the settlement occurred via a single6–8 or multiple streams of migration from Siberia9–15. The pattern of dispersals within the Americas is also poorly understood.

To address these questions at higher resolution than was previously possible, we assembled data from 52 Native American and 17 Siberian groups genotyped at 364,470 single nucleotide polymorphisms. We show that Native Americans descend from at least three streams of Asian gene flow. Most descend entirely from a single ancestral population that we call “First American”.

However, speakers of Eskimo-Aleut languages from the Arctic inherit almost half their ancestry from a second stream of Asian gene flow, and the Na-Dene-speaking Chipewyan from Canada inherit roughly one-tenth of their ancestry from a third stream. We show that the initial peopling followed a southward expansion facilitated by the coast, with sequential population splits and little gene flow after divergence, especially in South America. A major exception is in Chibchan-speakers on both sides of the Panama Isthmus, who have ancestry from both North and South America.

Reconstructing Native American Population History

 

[Cliffy]

This flies in the face of all the evidence i have gathered from Ethnographers, archaeologists, anthropologists, the Smithsonian and National Geographic. When I asked an archaeologist about the Bering Land Bridge about my findings on migrations from Asia, he said it would have been very difficult to do using standard models. More than likely most would have used a coastal or ocean route. But it has been shown that many people arrived here from Africa, Polynesia and Europe over periods of tens of thousands of years. From what I have been able to find through my research, there may have been humans inhabiting the Americas for 100 thousand+ years. But mainstream science is very slow to accept new concepts (according to the archaeologists I interviewed) and it takes much longer before the general public even hear about those changes.

 

[EagleSmack]

Sucks to be wrong eh Cliff?

 

[Cliffy]

Sucks to be wrong eh Cliff?

There are no definitive stats on any of this. The debate will go on long after I'm gone, so no, I am not wrong or right. At this point, it is all speculation. But I know you would prefer to gloat at anyone, who you deem an opponent, as wrong. But I will make allowances for you because you are a conservative after all.

 

[EagleSmack]

There are no definitive stats on any of this. The debate will go on long after I'm gone, so no, I am not wrong or right. At this point, it is all speculation. But I know you would prefer to gloat at anyone, who you deem an opponent, as wrong. But I will make allowances for you because you are a conservative after all.

You've seemed pretty adamant in the past stating how the Siberian Migrations were disproved.

Yes I am conservative... and you're a white man, not a Cree.