A person usually must receive two abnormal genes, one from each parent to have the disorder

Non–X-Linked Recessive Disorders

Some problems represent a non–X-linked trait that is recessive. Neither parent has the disorder but each has a 50% chance of passing the abnormal gene to the children if both parents carry one abnormal gene and one normal gene. Consequently, each young son or daughter has

Continue reading A person usually must receive two abnormal genes, one from each parent to have the disorder