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Ancient DNA points to additional New World migration

A 4,000-year-old Greenland man possessed close genetic ties to modern Siberians

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1:11pm, February 10, 2010

A 4,000-year-old Greenland man just entered the scientific debate over the origins of prehistoric populations in the Americas.

A nearly complete sequence of nuclear DNA extracted from strands of the long-dead man’s hair — the first such sequence obtained from an ancient person — highlights a previously unknown and relatively recent migration of northeastern Asians into the New World about 5,500 years ago, scientists say.

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