Question

Hemophilia A and color blindness are two X-linked recessive traits, whose loci are 10 cM from each other. Mickey, a phenotypically normal man is married to Minnie, a phenotypically normal woman with a hemophiliac father and a color-blind mother. Assume Minnie

Answer 1

Minnie has hemophiliac father and a color blind mother. So, Minnie has 50% chance of getting the hemophiliac allele, and 50% chance of getting color-blind allele. Again, Minnie has 25% chance of transferring the hemophilic allele and color blind allele to the first child. Therefore, the probability that Mickey and Minnie’s first child will have hemophilia but not color-blindness is 25%.

Answer 2

In X - linked recessive inheritance males are more prone to disease because they carry the disease trait. If the affected offspring