Ancient Human Migration after Out-of-Africa

[пенелопа]

Ancient Human Migration after Out-of-Africa

Daniel Shriner, Fasil Tekola-Ayele, Adebowale Adeyemo & Charles N. Rotimi.

Received: 05 January 2016 Accepted: 05 May 2016 Published online: 23 May 2016

Abstract

The serial founder model of modern human origins predicts that the phylogeny of ancestries exhibits bifurcating, tree-like behavior. Here, we tested this prediction using three methods designed to investigate gene flow in autosome-wide genotype data from 3,528 unrelated individuals from 163 global samples. Specifically, we investigated whether Cushitic ancestry has an East African or Middle Eastern origin. We found evidence for non-tree-like behavior in the form of four migration events. First, we found that Cushitic ancestry is a mixture of ancestries closely related to Arabian ancestry and Nilo-Saharan or Omotic ancestry. We found evidence for additional migration events in the histories of: 1) Indian and Arabian ancestries, 2) Kalash ancestry, and 3) Native American and Northern European ancestries. These findings, based on analysis of ancestry of present-day humans, reveal migration in the distant past and provide new insights into human history.

http://www.nature.com/articles/srep26565