This Week in Science

In Science this week, an international team of researchers describe the sequencing of the sheep genome, adding the last missing piece of a reference genome collection for major livestock species. With the genomic data, they constructed a phylogenetic tree that compared the reference genome sequences among ruminants and other related species, tracing the lineage back millions of years ago. They also identified unique sheep genes, including ones that support the secretion of lanolin.

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In a statement, National Institutes of Health Director Francis Collins says sexual harassment is "morally indefensible" and "unacceptable."

Octopuses might owe their intelligence to their liberal alterations to their genes, Cosmos reports.

Stat News and ProPublica report that African Americans are underrepresented in cancer clinical trials.

In Cell this week: genomic analysis of abdominal aortic aneurysm, effect of probiotics on the microbiome, and more.