Multiple Genomes

Rather than having one genome, people likely are made up of a number of different genomes, writes Carl Zimmer at the New York Times. This, he adds, may have medical implications.

“There have been whispers in the matrix about this for years, even decades, but only in a very hypothetical sense,” Alexander Urban, a geneticist at Stanford University, tells Zimmer. Urban adds that recent work has brought this idea out of the realm of the hypothetical.

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In PNAS this week: genomic study of group B Streptococcus evolution, selection on the X chromosome in great apes, and more.

Changing the fat and fiber content of people's diets affects their gut microbiome, metabolome, and colon cancer risk, researchers say.

Broken links are found throughout academic publications, and some services are trying to combat such link decay.

Nick Stockton at Wired says that a pause in studying genome-editing tools should be used to find a path forward.