Researchers have traced the emergence of the sickle cell variant to a single event that took place about 7,300 years ago, as GenomeWeb has reported.

Previous studies had indicated the presence of five sickle cell haplotypes, named after the regions were they are most common, and suggested different origins for the various haplotypes.

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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.