The US Government Accountability Office recently released its findings from a sting conducted on several companies that sell direct-to-consumer genetic tests, finding that the results of such tests are often "of little or no practical use." But, writes Emily Singer in MIT's Technology Review, the most "shocking" findings come from a series of undercover phone calls made to 15 of these companies by GAO workers.

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Two researchers have found that behavioral genetic defenses in criminal cases don't tend to affect outcomes, according to Popular Science.

Researchers report that while host genetics influence the oral microbiome, they don't appear to affect cavity-causing microbes, the Economist says.

Pandas' gut microbiomes change as what they eat changes with the seasons, writes Discover's Inkfish blog.

In PLOS this week: comparative genomic study of malaria-linked macaque parasite, search for apple root reference genes, and more.