ladybug
Forum Senior
Topics: 20
Posts: 57
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A couple who have no childern seek to have geneteic counselling because the husbands 2 brothers died in their teens of duchenne MD. Which of the ff best describes the husbands risk of being a carrier of DMD?
a. 0
b. 1/4
c. 1/2
d. 1/3
e. 3/4
Kindly explain thanks!
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| robin082006
Forum Hero
Topics: 471
Posts: 5,125
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A
Duchene is X-linked recessive.
Because the husband is normal phenotypic, he has normal X chromosome.
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