11,500-yr-old DNA reveals new population of Native Americans
Genetic analysis of a six-week-old infant that lived about 11,500 years ago in Alaska has revealed a previously unknown population of ancient Americans. The findings indicate a single Native American group split from East Asians about 35,000 years ago, which then split into two groups about 20,000 years ago: the new-found "Ancient Beringians" and other Native American ancestors, said researchers.