This Week in Science

In Science this week, a team of Swiss and German researchers report new details about the regulation of Hox genes, which are clustered together in the genome and control body shape and limb development. In the study, the researchers show that during mouse limb development, Hox genes are transcribed in two waves, the first controlling arm and forearm development and the second responsible for digit formation.

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The apple has traveled westward and eastward along the Silk Road, according to a new genetic analysis.

In Nature this week: GWAS data used to reposition drugs for psychiatric use, and more.

Genetic disease risk information doesn't always spur people to make healthy lifestyle changes, according to the Associated Press.

A University of California, San Diego-led team has used liquid biopsies to uncover possible treatments for patients with cancers of unknown primary.