A young woman is worried about having a child because her mother's only sister had a son with Duchenne muscular dystrophy (DMD). The young woman has no brothers or sisters. (DMD is a rare X-linked recessive disorder.)
a) Draw the relevant parts of the pedigree of the family described above. (Be sure to include the grandmother, the three
women mentioned, and all their mates.)
b) State the most likely genotype of everyone in the pedigree.
c) Calculate the probability that the young woman's first child will have DMD.