Science May Finally Explain Why This Family Walks On All Fours

July 17, 2014 8:55 PM

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The world first learned of the clan eight years ago following the popularity of the 2006 BBC documentary "The Family That Walks On All Fours." Just check out the video above.

At the time, researchers were puzzled by why these five siblings exhibited the behavior while their parents did not. Backward evolution became the primary explanation for the family's quadrupedalism -- but scientists may have had it all wrong. Now, new research suggests adaption to a genetic mutatio...

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