This Week in PLoS

In PLoS One this week, a study looks at retrogene evolution in mammals. In scrutinizing patterns of retrogene distribution in eight mammalian genomes and four non-mammalian genomes, researchers found that there has been a burst of young retrogenes in mammals and that in these shared retrofamilies, 14 to 18 percent of functional retrogenes may have originated independently in multiple mammalian species.

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Senator Elizabeth Warren (D-Mass.) has released the results of a genetic ancestry analysis, the Boston Globe reports.

Retraction Watch's Ivan Oransky and Adam Marcus report that Harvard Medical School and Brigham and Women's Hospital have recommended that more than 30 papers from a former researcher be retracted.

Thomas Steitz, who won the 2009 chemistry Nobel Prize for his ribosome work, has died, the Washington Post reports.

In PLOS this week: mechanisms for genes implicated in coronary artery disease, rumen microbes and host genetics influence cow methane production, and more.