This Week in PNAS

In this week's PNAS Early Edition, investigators describe the intestinal microbiome of a premature infant, in which they characterized "strain-level genomic divergence during the first three weeks of life." During colonoziation, the team identified three compositional phases, and in addition, genotypic variation that could be "responsible for divergent strain ecologies, including hotspots of sequence variation in regulatory genes and intergenic regions, and in genes involved in trans

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Lawmakers have asked four direct-to-consumer genetic testing companies to explain their privacy policies and security measures, according to Stat News.

The Trump Administration has proposed a plan to reorganize the federal government, the Washington Post reports.

In Science this week: genetic overlap among many psychiatric disorders, and more.

The Economist writes that an increasing number of scientific journals don't do peer review.