If someone says that the heritability of a trait is high, that trait is:
A) mainly genetically determined.
B) mainly environmentally determined.
C) two-thirds heredity and one-third environment.
D) 25 percent environmental and 75 percent genetic.

Question

Quizplus · Accepted Answer

When someone says that the heritability of a trait is high, it means that a large proportion of the variation in that trait can be attributed to genetic factors. Therefore, choice A is the best choice. Choices B through D are unlikely because they suggest that the environment plays a greater role in determining the trait, which contradicts the idea of high heritability.

If Someone Says That the Heritability of a Trait Is