Hox genes

Thumbnail image for Skeleton study sheds new light on how snakes evolved

Research by paleontologists at Indiana University and the University of Nebraska sheds new light on how snakes evolved their elongated, legless bodies. Hox genes, which establish the boundaries of the neck, trunk, lumbar, sacral and tail regions in birds, lizards, crocodiles and mammals, were previously thought to have been disrupted in snakes, resulting in a […]