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6 April, 16:47

If a man who has Duchenne muscular dystrophy has kids with a woman who does not have or carry the allele, how many of their sons could have the disorder?

A. None

B. All

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Answers (2)
  1. 6 April, 16:52
    0
    None of the sons could have the disorder
  2. 6 April, 17:06
    0
    The answer is none. Since DMD is a recessive x-linked trait, the sons will receive the Y from the father, and an X from the mother. Since the mother does not have the disease and is not a carrier, the sons cannot get the recessive x.
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