Research Article

The genetic prehistory of the New World Arctic

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Science  29 Aug 2014:
Vol. 345, Issue 6200, 1255832
DOI: 10.1126/science.1255832

Arctic genetics comes in from the cold

Despite a well-characterized archaeological record, the genetics of the people who inhabit the Arctic have been unexplored. Raghavan et al. sequenced ancient and modern genomes of individuals from the North American Arctic (see the Perspective by Park). Analyses of these genomes indicate that the Arctic was colonized 6000 years ago by a migration separate from the one that gave rise to other Native American populations. Furthermore, the original paleo-inhabitants of the Arctic appear to have been completely replaced approximately 700 years ago.

Science, this issue 10.1126/science.1255832; see also p. 1004