The heritability of a specific trait will be lowest among
A) genetically similar individuals who have been raised in similar environments.
B) genetically similar individuals who have been raised in dissimilar environments.
C) genetically dissimilar individuals who have been raised in similar environments.
D) genetically dissimilar individuals who have been raised in dissimilar environments.

Question

Quizplus · Accepted Answer

The heritability of a trait is the proportion of the variation in the trait that is due to genetic factors. If genetically similar individuals (such as twins) have been raised in similar environments, then any differences in the trait are likely to be due to genetic factors, and the heritability would be high. If genetically dissimilar individuals have been raised in dissimilar environments, then any differences in the trait are likely to be due to environmental factors, and the heritability would be low. However, if genetically similar individuals have been raised in dissimilar environments, then any differences in the trait could be due to either genetic or environmental factors, making it difficult to determine the heritability. Therefore, the heritability of a trait will be lowest among genetically similar individuals who have been raised in dissimilar environments.

The Heritability of a Specific Trait Will Be Lowest Among