Knowing their genetic information could help people improve their lives and, possibly, avoid preventable deaths, writes 23andMe co-founder Anne Wojcicki in the Guardian's Comment Is Free section. While she acknowledges that it will take years for researchers to uncover what all the billions of bases in the human genome do, she says that enough is currently known to help some people.

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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.