This Week in PNAS

In a paper appearing in this week's PNAS Early Edition, a team led by investigators at the University of California, Irvine, shows that the sperm dynein intermediate chain multigene family contributes to the differential reproductive success among Drosophila males, such that deletion of all members "impairs the competence of the sperm in the presence of sperm from wild-type males." This also shows "how quickly a new gene function can be incorporated into the genetic network

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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.