This Week in PLOS | GenomeWeb

This Week in PLOS

In PLOS Genetics, the University of California, Santa Cruz's Beth Shapiro and colleagues from the US, Russia, and Canada present evidence for a relatively straightforward model for polar bear evolution. Using genomic sequence data on seven polar bears, one black bear, one mainland brown bear, and one brown bear from Alaska's Admiralty, Baranof, and Chichagof, or ABC, islands, the team uncovered an over-representation of polar bear sequences on the ABC brown bear X chromosome.

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