Data from nearly 300 ancient and modern individuals reveals that at least five distinct groups migrated to the Pacific islands across 3 millennia and, once settled, were maintained by maternal lines.
To address this gap, Harvard University geneticists David Reich and Yue-Chen Lui teamed up with scientists who had worked with people in Micronesia for decades. With permission from Indigenous peoples of the islands and collaboration with other local stakeholders, the researchers extracted DNA from 164 individuals from sites between 2800 and 500 years old.
From the ancient to modern samples, female-inherited mitochondrial DNA remains consistent at sites, whereas male ancestry patterns change over time. The pattern suggests According to co-author Frank Camacho, a CHamoru biologist at the University of Guam, research like this can help people of the region better understand their past. “We’re able to examine how we’re related to other peoples, other islands, other communities in the Pacific.”
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