Even when a trait is highly heritable,it can still be modified by the environment.

Question

Quizplus · Accepted Answer

While heritability may play a role in the development of a trait, environmental factors can also contribute to the expression of that trait. For example, a genetic predisposition towards obesity may be influenced by access to healthy foods and exercise opportunities. Therefore, even when a trait has a high heritability, it is still subject to modifications by environmental factors.

Even When a Trait Is Highly Heritable,it Can Still Be