The Definitive Guide To Calculating Narrow-Sense Heritability For Enhanced Breeding Strategies
Narrow-sense heritability (h²) estimates the proportion of phenotypic variance attributable to additive genetic variation. To calculate h², phenotypic variance is partitioned into genotypic (additive, dominance, epistatic) and environmental variance (genotype-environment interaction). Methods for estimating h² include parent-offspring regression and half-sib analysis. The formula for parent-offspring regression is h² = 2Cov(parent, offspring) / Vp(offspring), where Cov…