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2. A young woman is worried about having a child because her mother's only sister had...

2. 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

The probability should come out to 1/16. Please explain how you would arrive at that final answer in detail. Please write neatly!

Thank you!

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