July 8, 2011

THERE'S NO SUCH THING AS SPECIES:

Polar bear origins: Polar bears have Irish ancestry, suggests DNA study (Jennifer Welsh, 7/07/11, LiveScience )

Comparing a special kind of genetic material — called mitochondrial DNA — of these bears, the researchers found the modern polar bear's DNA was very similar to that of the Irish brown bears. The bears seem to have intermixed their DNA in the last few dozen millennia, sometime between 20,000 and 50,000 years ago.

"It's interesting because polar bears really are marine animals," Bradley said. "That's not the case for these brown bears."


In other words, bears are bears.


Posted by at July 8, 2011 5:59 AM
  

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