Depends on Both: This depends on whether both parents carry the trait. If only one parent is a carrier of the gene, then there is no chance of inheriting cystic fibrosis. However, if both parents carry the CF gene, then there is a 25% chance their child will inherit cystic fibrosis.
Answered 6/10/2014
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Like hitting lottery: The only way that would happen would be for the baby to get a defective gene from the carrier(50%) and to have a spontaneous mutation from the other parents gene (
Answered 10/22/2015
2.1k views
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