Genetic variance

Genetic variance is a concept outlined by the English biologist and statistician Ronald Fisher in his fundamental theorem of natural selection.

Fisher made no restrictive assumptions in his formula concerning fitness parameters, mate choices or the number of alleles and loci involved.

Dominance genetic variance refers to the phenotype deviation caused by the interactions between alternative alleles that control one trait at one specific locus.

Heritability can be used as an important predictor to evaluate if a population can respond to artificial or natural selection.

[5] Broad-sense heritability, H2 = VG/VP, Involves the proportion of phenotypic variation due to the effects of additive, dominance, and epistatic variance.

Narrow-sense heritability, h2 = VA/VP, refers to the proportion of phenotypic variation that is due to additive genetic values (VA).

Traditionally, using pedigree data in humans, plants, and livestock species to estimate additive genetic variance.