Men have xy (or yx) chromosomes and women have xx chromosomes. x-linked recessive genetic diseases (such as juvenile retinoschisis) occur when there is a defective x chromosome that occurs without a paired x chromosome that is not defective. represent a defective x chromosome with lowercase x, so a child with the xy or yx pair of chromosomes will have the disease and a child with xx or xy or yx or xx or xx will not have the disease. each parent contributes one of the chromosomes to the child. complete parts a through d below. a. if a father has the defective x chromosome and the mother has good xx chromosomes, what is the probability that a son will inherit the disease? b. if a father has the defective x chromosome and the mother has good xx chromosomes, what is the probability that a daughter will inherit the disease? c. if a mother has one defective x chromosome and one good x chromosome and the father has good xy chromosomes, what is the probability that a son will inherit the disease? d. if a mother has one defective x chromosome and one good x chromosome and the father has good xy chromosomes, what is the probability that a daughter will inherit the disease?