This Week in PNAS

In work published in the early online edition of PNAS this week, scientists study how evolutionary selection affects modes of gene regulation. Using a model that takes into account genetic drift, mutation, and time-dependent selection, they found the "effective population size and the typical time scale of environmental variations to be key parameters determining the fitness advantage of the different modes of regulation," they say in the abstract.

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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.