Which of the following leads to the higher frequency of inherited Becker muscular dystrophy compared to Duchenne muscular dystrophy?
A) Higher fitness of mutations in males affected with Becker than Duchenne muscular dystrophy
B) Higher mutation rate for Duchenne-associated disease
C) Increased frequency of prenatal termination for Duchenne cases
D) Lower penetrance in female carriers for Becker versus Duchenne mutations
E) None of the above
Correct Answer:
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