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A member asked:
If only one parent is a carrier of cystic fibrosis, how likely is the child to be a carrier?
3 doctors weighed in across 2 answers
Close to zero: Unless one parent is unfaithful, or there is a spontaneous mutation, it can't happen.
Answered 4/18/2012
5.9k views
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50%: A carrier parent has 2 possible genes to pass along.There is a fifty % chance a child could get either the normal or CF gene. If they did, they would be a carrier, like the parent.
Answered 11/11/2018
2.2k views
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