It isn't only boys that are colorblind. It is just that it is much much more likely. In people, the genes that cause color blindness are on the same chromosomes that determine if you are physically a...
50%. It depends on which copy of the X chromosome the boy receives from the mother. Also, the father's color blindness doesn't matter at all for male children.
veteranarians just discovered that dogs are not color blind. they can see colors just like humans can. they discovered this by having dogs sort colored photos. most animals that are color blind are...