Tracing Roots

The maternal lineage of Ashkenazi Jews traces back to Europe, according to a new study in Nature Communications from researchers led by the University of Leed's Martin Richards. The paternal lineage as been traced separately using the Y chromosome to the Near East.

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Researchers find that historical factors influence which genes are the most highly studied, the Atlantic reports.

The US National Science Foundation's new sexual harassment policy is to go into effect next month, according to Nature News.

Researchers report using genotyping to tie together illegal ivory shipments and trace them back to a handful of cartels, the New York Times reports.

In Nature this week: genomic ancestry analysis of Sardinians, current noncoding mutations in colorectal cancer, and more.