Which of the following characterizes Duchenne muscular dystrophy?
A. Muscles atrophy due to a loss of fat and scar tissue.
B. There is a defective gene for the protein called dystrophin.
C. There is a defective gene for the protein called duchennase.
D. Muscles atrophy due to lack of response to acetylcholine.
E. More females are affected than males.
Answer: B
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