Question

Why do siblings produce offspring with genetic mutations?

Answer 1

a lot of diseases are recessive, meaning you have to have 2 of the diseased gene before the disease shows. in the normal population a girl and a guy wouldn't have a large chance of having 2 recessive genes and give their child the disease, but if the girl and guy are related the chance of them both having a recessive diseased gene are much higher. therefore their chance of having a diseased child is much greater.

Answer 2

because their genetic make up is pretty much the same and there is'nt enough varitation to make a normal offspring

Answer 3

I think it does becuase you have the same basic genes coming together.

Answer 4

cuz their chromosomes are too similar, they have way too many identical aliles that the child would come out with some chromosomes missing, hence makin them retarded or whatever