This Week in PNAS

In the PNAS Early Edition this week, a team led by researchers at the University of Nebraska-Lincoln shows that "individuality in gut microbiota composition is a complex polygenic trait shaped by multiple environmental and host genetic factors." Namely, using quantitative pyrosequencing of the microbiota in 645 intercross line mice, the team found a core measurable microbiota of 64 taxonomic groups, within which they identified "co-segregation with 530 fully informative SNP markers" and "18 host quantitative trait loci that show significant or suggestive genome-wide linkage with re

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The London School of Economics' Daniele Fanelli argues at the Proceedings of the National Academy of Sciences that the reproducibility crisis in science isn't as dire as some say.

A team of researchers in Portugal has examined the genomic basis for racing pigeons' athleticism and navigational skills, finding it's likely polygenic.

Wired reports that diagnostic firms continue to seek, post-Theranos, the ability to diagnose diseases from small amounts of blood.

In Science this week: analysis of DNA from ancient North Africans, and more.