Broad-sense heritability is the proportion of phenotypic variance that is due to genetic variance. Narrow-sense heritability is the proportion of phenotypic variance that is due to additive genetic variance. Heritability can be measured by eliminating one of the variance components, by analyzing parent-offspring regression, or by comparing individuals having different degrees of relatedness.
-If the environmental variance $(V_E)$ increases and all other variance components remain the same, what will the effect be?

Question

Quizplus · Accepted Answer

Broad-sense heritability is calculated as the ratio of genetic variance to total phenotypic variance. If environmental variance increases while genetic variance remains constant, the total phenotypic variance increases, leading to a decrease in broad-sense heritability.

Broad-Sense Heritability Is the Proportion of Phenotypic Variance That Is (VE)(V_E)(VE​)

Broad-Sense Heritability Is the Proportion of Phenotypic Variance That Is $(V_E)$