The gene for the Unertan Syndrome, a disorder causing humans to walk on all four extremities (hands and feet), was discovered by a group of scientists from Cukurova, Bilkent and Baskent universities, it was reported.

A press release issued by Cukurova University said the discovery created wide reaction in science circles and noted that it was regarded as a discovery that could constitute a proof for the evolution of species.

It said the article regarding the discovery was published in one of the leading science magazines in the U.S. "Proceedings of the National Academy of Sciences (USA)" .

The Unertan Syndrome was defined by Prof. Dr. Uner Tan a scientist from Cukurova University three years ago, when he identified in southern Turkey a large family with six individuals exhibiting the Unertan syndrome due to intra-familial marriage.