The Mutations Found in the CF Gene That Result in Cystic

question 9

Multiple Choice

The mutations found in the CF gene that result in cystic fibrosis are recessive because

• A)the protein produced by the normal allele is sufficient for normal cellular function.
• B)the CF mutations always result in no protein being produced.
• C)CF mutations result in a protein that has normal function only if normal CF protein also exists in the cell.
• D)dominant alleles that cause a fatal disorder, such as cystic fibrosis, cannot be inherited.