Gina has a genotype for average sociability. If she is in an environment where sociability is discouraged, she is likely to be below average in sociability. If she is in an environment where sociability is encouraged, she may be above average in sociability. The fact that Gina's genotype can lead to different phenotypes depending on the environment is a phenomenon referred to as
A)niche-picking.
B)an active gene-environment relation.
C)an evocative gene-environment relation.
D)a reaction range.

Question

Quizplus · Accepted Answer

The phenomenon described in the question is known as a reaction range. A reaction range refers to the range of possible expressions of a given trait that can be produced by a single genotype, depending on environmental factors. In other words, a genotype can lead to different phenotypes depending on the environment. Choice A (niche-picking) refers to the tendency for individuals to actively choose environments that are compatible with their genotypes. Choice B (an active gene-environment relation) refers to the role of an individual's behavior in shaping their environment. Choice C (an evocative gene-environment relation) refers to the way an individual's phenotype can elicit particular responses from others in the environment. While these are all related concepts, they do not fully capture the phenotype variability that can occur due to environmental factors.

Gina Has a Genotype for Average Sociability