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This Week in Nature

In a paper published online in advance in Nature this week, a team led by researchers at Oregon Health and Science University describes "ploidy conveyor" as a source of genetic variation in hepatocytes. It shows that in mouse polyploidy hepatocytes, multipolar mitotic spindles frequently form — which "can result in one-step ploidy reversal to generate offspring with halved chromosome content," the team writes.

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The Guardian reports that the Mammalian Genetics Unit at the Harwell Institute is to close.

Scientific research itself contributes to plastic waste and isn't very sustainable, FiveThirtyEight reports.

Restaurants in the US may soon serve AquaBounty's genetically modified salmon, according to the Associated Press.

In Science this week: three studies from the Ruminant Genome Project, and more.