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This Week in PNAS

Researchers from the University of California, Davis, the University of Connecticut, and elsewhere attempt to tease out natural selection signals in Indigenous populations in Alaska, the US Southeast, and central Mexico. With genotyping arrays, the team profiled genome-wide SNP patterns in 150 individuals from Indigenous populations, using the variant patterns to explore the individuals' ancestry and search for potential signs of selection that were shared or distinct between populations.

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According to New Scientist, GEDmatch changed its terms and conditions over the weekend to opt its users out of law enforcement searches.

The Atlantic looks into time spent pursuing gene leads generated through candidate gene studies.

A twin study uncovers evidence that genes may influence whether someone gets a dog, Martha Stewart reports.

In PNAS this week: Cdx2 cells can help regenerate heart tissue in mice following a heart attack, PIWI-interacting small RNA levels in human cancer, and more.