The pedigree below tracks Duchenne Muscular Dystrophy (DMD) through several generations. DMD is an X-linked recessive trait.
If individuals I-1 and I-2 had another son, what is the chance that he would have DMD?
Choose 1
(choice A)
A
0%
(choice B)
B
25%
(choice C)
C
50%
(choice D)
D
100%
Answers: 2
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