If a man shows the premutation allele for Fragile X syndrome, what is the probability that he will pass it on to his son?
A)100%
B)75%
C)50%
D)25%
E)0%

Name: If a man shows the premutation allele for Fragile X syndrome, what is the probability that he will pass it on to his son? A)100% B)75% C)50% D)25% E)0%
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Question

Quizplus · Accepted Answer

Fragile X syndrome is an X-linked disorder. A man passes his Y chromosome to his sons, not his X chromosome, so he cannot pass the premutation allele to his sons.

If a Man Shows the Premutation Allele for Fragile X