Types of Heritability

The model of phenotypic variance that we've just developed can be used to address the question of how much of the phenotypic variance in a characteristic is due to genetic differences. Broad-sense heritability (H2) represents the proportion of phenotypic variance that is due to genetic variance and is calculated by dividing the genetic variance by the phenotypic variance:

variance, because the additive genetic variance primarily determines the resemblance between parents and offspring. Narrow-sense heritability (h2) is equal to the additive genetic variance divided by the phenotypic variance:

narrow-sense heritability = h2

vp broad-sense heritability = H2

0 0

Post a comment