Which one of the following BEST describes genotype-by-environment interactions?
A)Genetic and environmental factors combine to influence phenotype.
B)The genotype of an organism determines how that organism will behave in its environment.
C)The environment of an organism determines the genetic make-up of that organism.
D)Under certain circumstances, two organisms with identical genotypes have different phenotypes.
E)Under certain circumstances, two organisms with identical phenotypes have different genotypes.

Question

Quizplus · Accepted Answer

Genotype-by-environment interactions refer to how the combination of genetic and environmental factors influences phenotype. This means that the genetic makeup of an organism interacts with the environment it is in to determine its observable characteristics. Choice A is the only option that accurately describes this phenomenon. Choices B and C are incorrect because they suggest that either genotype or environment alone determines phenotype, which is not the case. Choices D and E describe situations that can occur but are not specific to genotype-by-environment interactions.

Which One of the Following BEST Describes Genotype-By-Environment Interactions