Duchenne muscular dystrophy is a sex-linked condition in humans that results from abnormal dystrophin protein. The condition results in progressive weakening and atrophy of muscles, usually beginning with the legs. This is most consistent with which of the following?
A) an abnormality of actin protein distribution
B) a structural abnormality of the sarcomere
C) a disturbance of smooth muscle
D) an abnormality of calcium channels
E) an enzymatic abnormality
Correct Answer:
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