Sounds more like a product of inbreeding:Walden wrote:These people must surely lie somewhere between the lower animals and men, eh?
I had a long-time patient with cerebellar ataxia (SCA-6), who, while not mentally retarded, had a great deal of difficulty with balance, speech and locomotion. It's remarkable that these folks can walk at all, much less that they've compensated by walking on all fours.The siblings, who live with their parents and 13 other brothers and sisters, are mentally retarded, as a result of a form of cerebellar ataxia — an underdevelopment of the brain similar to that in cystic fibrosis. Their mother and father, who are themselves closely related, are believed to have passed down a unique combination of genes resulting in the behaviour.