Saturday, July 30, 2011

Ancestry of Polar Bears

According to a study in the journal Current Biology, every polar bear alive today can trace its ancestry back to a single female bear that lived in Ireland during the last Ice Age. Interestingly, this single female bear was a brown bear. These findings are based on the analysis from mitochondrial DNA extracted from bones.

Read more here: Today's Polar Bears Trace Ancestry To ... Ireland? : NPR

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