Question

An individual has parents who are both carriers of the recessive allele that causes cystic fibrosis. Neither parent is affected by the disease.What is the chance that their offspring will have the disease? A. 0% B. 25% C. 50% D. 100%

Answer 1

25%

A recesseive allele requires 2 same alleles to function. The child will recieve2 alleles so knowing it is already a possiblity, but dominant alleles are still there, the possibility is 25%.

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