Not done Sir, but doing.

Plenty is doing.

"There is in fact very little evidence that genetic variation plays any significant role in causing variations in human laterality."

M.J.MORGAN & M.C.CORBALLIS, 1978.

Disclaimer: this quote appears here only to spark discussion. It is not endorsed one way or the other. Make up your own mind. Or just refresh the page for another viewpoint. From a collection assembled by the late Chris Brand.