A colorblind woman marries a man with normal vision. What is the chance that if they have a son he will be colorblind? What is the chance that if they have a daughter she will be colorblind?

Hemophilia, disease in which the blood lacks a clotting factor, is caused by an X linked recessive gene. Joe doe not have hemophilia and Lucille is heterozygous for the condition.  What is the chance that their MALE child will have hemophilia? (Note: you are calculating the probability for their MALE children only, in other words if they have 1 male child, what is the probability that he will be born with the disease?)     0%     1/4 or 25%     2/4 or 50%     3/4 or 75%     4/4 or 100%

What is the probability of a hemophiliac daughter if the mother is a carrier and the father is normal? Remember hemophilia is caused by a recessive X-linked allele. 1/2 01 00 3/4 OC

Colorblindness is an X linked gene. Normal vision (XN ) is dominant over colorblind (Xn). Cross a carrier female to a normal male. How many of their children will be colorblind? How many of their sons will be colorblind? How many of their daughters will be colorblind?