If the estimated heritability of a trait is approximately 0.50, then
A) the environment must have little to no influence over the expression of the trait.
B) genes exclusively control the expression of the trait in at least 50% of the population.
C) at least 50% of the variation in the trait in the population is due to genetic differences.
D) the environment completely controls the variation in the trait in the population.

Question

Quizplus · Accepted Answer

An estimated heritability of 0.50 means that at least 50% of the variation in the trait in the population is due to genetic differences, while the remaining variation is due to environmental factors. It does not mean that the environment has little to no influence or that genes exclusively control the expression of the trait in at least 50% of the population. However, it does suggest that genetic factors play a significant role in determining the trait.

If the Estimated Heritability of a Trait Is Approximately 0