This Week in Nature

In Nature Ecology & Evolution this week, a team of US and German scientists presents the sequenced genome of the Amazon molly, a fish representing one of the few examples of an asexual vertebrate. While asexuality among vertebrates in nature is generally explained by genomic decay due to absence of meiotic recombination, the researchers discovered few signs of genetic degeneration or harmful mutations in the animal's genome.

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Researchers find that historical factors influence which genes are the most highly studied, the Atlantic reports.

The US National Science Foundation's new sexual harassment policy is to go into effect next month, according to Nature News.

Researchers report using genotyping to tie together illegal ivory shipments and trace them back to a handful of cartels, the New York Times reports.

In Nature this week: genomic ancestry analysis of Sardinians, current noncoding mutations in colorectal cancer, and more.