This Week in PLoS

In PLoS Biology this week, investigators at the Broad Institute and their colleagues describe "the role of nucelosome positioning in the evolution of gene regulation." In examining the relationship between chromatin organization and gene expression in 12 Hemiascomycota yeast species, by determining mRNA abundance and nucleosome positions genome-wide, the team found "substantial conservation of global and functional chromatin organization in all species," and that ch

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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.