This Week in PNAS

In the early, online edition of the Proceedings of the National Academy of Sciences, University of Washington researchers describe interactions between variants in the catechol-O-methyltransferase gene COMT, the brain's white matter properties, and second language immersion in adults.

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Researchers report that deleting one gene from butterflies affects their wing coloration patterns, according to the Washington Post.

The Seattle Times writes that pharmacogenomics testing can help choose medications that may work best for people with depression.

In PNAS this week: genome sequencing of weevil symbionts, retinoid X receptor deletion in lung cancer metastasis, and more.

Sequencing could help combat foodborne illnesses, according to a blog post by Food and Drug Administration officials.