This Week in PNAS

Scientists from the National Institute of Genomic Medicine in Mexico present an analysis of genomic diversity in Mexican Mestizo populations. The research was done with the goal of creating a better foundation for genomic medicine targeting Mexicans. "Our results provide evidence of genetic differences between Mexican subpopulations that should be considered in the design and analysis of association studies of complex diseases," the authors write.

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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.