Bok
09-13-2013, 07:06 PM
Lefties and righties can thank same DNA that puts hearts on left side for hand dominance
More... (http://www.sciencenews.org/view/generic/id/353240/title/Genes_for_body_symmetry_may_also_control_handedness)
More... (http://www.sciencenews.org/view/generic/id/353240/title/Genes_for_body_symmetry_may_also_control_handedness)