Members of a family walk on all fours in Turkey, could be 'missing link between man & ape'

Members of Turkey's Ulas family walk on all fours, using palms of their hands. Evolutionary psychologist Professor Nicholas Humphrey found out that six people in the family were born with this trait. Although Turkish scientists theorised that some form of "devolution" might have occurred, Humphrey rejected this notion. A documentary had described them as "missing link between man and ape".