additive genetic variance


Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Wikipedia.
Related to additive genetic variance: Quantitative genetics, narrow sense heritability

additive genetic variance

[¦ad·ə·div jə¦ned·ik ′ver·ē·əns]
(genetics)
That part of the genetic variance of a quantitative character attributed to the average effects of substituting one allele for another at a given locus or at the multiple loci governing a polygenic trait.
References in periodicals archive ?
In populations with little or no epistatic genetic variance, additive genetic variance is expected to behave similarly to molecular genetic variance.
According to Paterniani (1967), it is of interest that the additive genetic variance is maintained as high as possible to allow the achievement of substantial gains by selection.
It is known that small populations give imprecise estimates of additive genetic variance and heritability, and the high standard errors on variances and heritabilities in this study illustrate this point.
P]) was separated into the additive genetic variance ([V.
11] is the additive genetic variance for the direct effect of linear trait, i = 1; [g.
With the parity number increases, the proportional increases of variance for herd-year and residual effects deemed relatively higher than the additive genetic variance, indicating more environmental influences on SCS increase.