Doctor insights on:
Do Both Parents Have To Be Cystic Fibrosis Carriers For A Child To Get It
Yes: It is a recessive trait, so both have to have the gene to pass it to a child. ...Read more
Do both parents have to be cystic fibrosis carriers in order for their child to be born with this disease?
Yes: Both parents have to be carriers and then their child has 25% chance of having the disease, 50% chance of being a carrier and 25% of not even being a carrier. The most common mutation causing cystic fibrosis is ?f508. But there are over 1500 mutations identified so far. ...Read moreSee 1 more doctor answer
Is it possible for one child to have cystic fibrosis while another, from the same parents, be completely normal?
Does a child have to inherit the same mutation from both parents in order to have cystic fibrosis?
Does my child have to inherit the same exact mutation from both parents in order to develop cystic fibrosis?
Yes: Cystic fibrosis (CF) is a genetic disease, but it requires two faulty genes to be expressed as a disease. A healthy person can carry one defective CF gene and not be affected by cf. If each member of a couple has a defective CF gene, they have a 25% chance of having a child who inherits both defective copies of the CF gene. Depending on the type of CF gene defect, that child could then develop cf. ...Read moreSee 1 more doctor answer
What can I do if my brother has a mild case of cystic fibrosis and my parents are making me get tested?
50%/time: Carrier parents pass either the normal or affected gene at equal(50%) frequency any time they conceive.In a million random parings, 25% would result in cf, 25% in non-carrier & 50% carriers. In practice, the parents could produce all cf, all carrier or all non- carrier kids. ...Read more
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