Ancestry of Polar Bears

Source: istockphoto.com

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