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Micronesia began to be peopled earlier than other parts of Remote Oceania, but the origins of its inhabitants remain unclear. We generated genome-wide data from 164 ancient and 112 modern individuals. Analysis reveals five migratory streams into Micronesia. Three are East Asian related, one is Polynesian, and a fifth is a Papuan source related to mainland New Guineans that is different from the New Britain-related Papuan source for southwest Pacific populations but is similarly derived from male migrants ~2500 to 2000 years ago. People of the Mariana Archipelago may derive all of their precolonial ancestry from East Asian sources, making them the only Remote Oceanians without Papuan ancestry. Female-inherited mitochondrial DNA was highly differentiated across early Remote Oceanian communities but homogeneous within, implying matrilocal practices whereby women almost never raised their children in communities different from the ones in which they grew up.

Original publication

DOI

10.1126/science.abm6536

Type

Journal article

Journal

Science (New York, N.Y.)

Publication Date

07/2022

Volume

377

Pages

72 - 79

Addresses

Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.

Keywords

Humans, DNA, Mitochondrial, Child, Micronesia, Female, Male, DNA, Ancient, Ethnicity, Asians, Native Hawaiian or Other Pacific Islander