A phenotypically normal woman marries a man with CMT disease,an autosomal dominant disorder.They have a son who has CMT disease.How did the son get it?
A) The mother had at least one dominant allele,which she passed on to her son.
B) The father had at least one dominant allele,which he passed on to his son.
C) The mother had one recessive and one dominant allele,one of which she passed on to her son.
D) The father had two recessive alleles,one of which he passed on to his son.
E) None of the above.
Correct Answer:
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