Photo: Family Walks on All Fours, May Offer Evolution Insight, Experts Say



Siblings walk on all fours in rural Turkey. Three sisters and two brothers (one of whom is not shown) are almost exclusively quadrupedal, due to a genetic defect, scientists say.


Photograph courtesy BBC, from the TV documentary The Family That Walks on All Fours, airing on March 17 in the U.K. on BBC Two


NEWS FEEDS    After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed. After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed.

Get our news delivered directly to your desktop—free.
How to Use XML or RSS

ADVERTISEMENT

NATIONAL GEOGRAPHIC'S PHOTO OF THE DAY

50 Drives of a Lifetime

Listen to your favorite National Geographic news daily, anytime, anywhere from your mobile phone. No wires or syncing. Download Stitcher free today.