This Week in Nature

In this week's Nature Genetics, researchers from the University of California, San Francisco, report data showing that competition between animal mitochondrial genomes is directed by the selfish drive of a genome rather than the functionality it imparts to an organism. To explore how mitochondrial genomes compete for transmission from mother to progeny, the researchers introduced additional genomes into Drosophila.

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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.