Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human X chromosome.The patients have muscles that weaken over time because they have absent or decreased dystrophin,a muscle protein.They rarely live past their 20s.How likely is it for a woman to have this condition?
A) Women can never have this condition.
B) One-half of the daughters of an affected man would have this condition.
C) One-fourth of the daughters of an affected father and a carrier mother could have this condition.
D) Very rarely: it is rare that an affected male would mate with a carrier female.
Correct Answer:
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