This Week in PNAS

Washington State University researchers put together a map of ultraviolet light-induced damage across a yeast eukaryotic genome. Using an approach called cyclobutane pyrimidine dimer sequencing, or CPD-sequencing, the team tracked the formation of such dimers following UV exposure at the single nucleotide level over the genome, in relation to the broader nucleosome patterns and chromosomal landscape.

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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.