This Week in Science

In a paper published online in advance in Science this week, Miyuki Sato and Ken Sato at Gunma University in Japan show that fertilization-triggered autophagy is "required for the elimination of paternal mitochondria in Caenorhabditis elegans." Sato and Sato show that, consequently, such autophagy is also responsible for "maternal inheritance of mitochondrial DNA" in the roundworm.

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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.