Cystic fibrosis affects the lungs,the pancreas,the digestive system,and other organs,resulting in symptoms ranging from breathing difficulties to recurrent infections.Which of the following terms best describes this expression of phenotypes?

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Pleiotropy refers to a single gene affecting multiple traits or phenotypes. In cystic fibrosis, the mutation in the CFTR gene affects multiple organs and results in a range of symptoms. The other options do not fit as well since incomplete dominance refers to a blending of traits, multiple alleles refers to a gene having more than two alleles, and epistasis refers to the interaction between two genes to determine a single trait.

Cystic Fibrosis Affects the Lungs,the Pancreas,the Digestive System,and Other Organs,resulting