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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York University researchers find genomic evidence of inbreeding in the yellow-banded bumblebee, according to Reuters.

In its survey of US adults, the Pew Research Center finds that views on the genetic engineering of animals depend on why it's done.

The Scientist reports agricultural researchers are working on a gene-stacking tool.

In Nature this week: statistical method for overcoming case-control imbalance issues, and more.