The Mutations Found in the CF Gene That Result in Cystic

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.