A member asked:

What are the chances of inheriting cystic fibrosis if one's parent has the trait?

5 doctors weighed in across 2 answers
Dr. David Escobar answered

Specializes in Family Medicine

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 Jun 10, 2014

5.9k views

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Dr. James Ferguson answered

Specializes in Pediatrics

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 Oct 22, 2015

2.1k views

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