Sunlight exposure has stronger effect on skin cancer risk in fair-skinned humans than in individuals with darker skin. This is an example of:

Question

Quizplus · Accepted Answer

Genotype-by-environment interaction refers to the phenomenon where the effects of a particular gene depend on the environment in which it is expressed. In this case, the effect of sunlight exposure on skin cancer risk is dependent on the skin color of an individual, which is determined by their genotype. Therefore, this is an example of genotype-by-environment interaction. The other options do not accurately represent this phenomenon. Pleiotropy refers to a single gene affecting multiple traits, epistasis refers to the interaction of multiple genes affecting a single trait, and differences in the norm of reaction refer to the range of phenotypic variation that can result from a given genotype in different environments.

Sunlight Exposure Has Stronger Effect on Skin Cancer Risk in Fair-Skinned