If a couple has a child who suffers from cystic fibrosis,then both must be carriers.

Name: If a couple has a child who suffers from cystic fibrosis,then both must be carriers.
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Cystic fibrosis is an inherited genetic disorder that is caused when both parents are carriers of the defective CFTR gene. If both parents are carriers, there is a 25% chance of each child inheriting two copies of the faulty gene and developing cystic fibrosis.

If a Couple Has a Child Who Suffers from Cystic