No, I don't mean where do they come from today. I mean where did they come from originally? The Smurfit Institute of Genetics at Trinity College, Dublin, have discovered the answer. The remains of a brown bear between 20,000 and 50,000 years old have been found in a cave in Ireland. Use of mitochondrial DNA has shown she is an ancestor of all today's polar bears. Perhaps the flagging population of polar bears might increase if they were offered a diet of Guinness.
Ronan Coghlan
Ronan Coghlan
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