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The genetic prehistory of the New World Arctic
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2014 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 345, no 6200, 1020-+ p.Article in journal (Refereed) Published
Abstract [en]

The New World Arctic, the last region of the Americas to be populated by humans, has a relatively well-researched archaeology, but an understanding of its genetic history is lacking. We present genome-wide sequence data from ancient and present-day humans from Greenland, Arctic Canada, Alaska, Aleutian Islands, and Siberia. We show that Paleo-Eskimos (similar to 3000 BCE to 1300 CE) represent a migration pulse into the Americas independent of both Native American and Inuit expansions. Furthermore, the genetic continuity characterizing the Paleo-Eskimo period was interrupted by the arrival of a new population, representing the ancestors of present-day Inuit, with evidence of past gene flow between these lineages. Despite periodic abandonment of major Arctic regions, a single Paleo-Eskimo metapopulation likely survived in near-isolation for more than 4000 years, only to vanish around 700 years ago.

Place, publisher, year, edition, pages
2014. Vol. 345, no 6200, 1020-+ p.
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URN: urn:nbn:se:su:diva-107618DOI: 10.1126/science.1255832ISI: 000340870900030OAI: diva2:749953


Available from: 2014-09-25 Created: 2014-09-22 Last updated: 2014-09-25Bibliographically approved

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Gotherström, Anders
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Department of Archaeology and Classical Studies
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