Lack Of Genetic Diversity May Have Doomed Tasmanian Tiger, Scientists Say

An illustration of a Thylacine  (Photo by: Brown Bear/Windmill Books/UIG via Getty Images)

Although humans are blamed for the extinction of the dog-like Australian marsupial some 80 years ago, researchers say its problems may have started more than 70,000 years ago.

(Image credit: Windmill Books/UIG via Getty Images)

(via NPR)

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