genetic variance


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genetic variance

[jə¦ned·ik ‚ver·ē·əns]
(genetics)
The phenotypic variance in a population that is due to genetic heterogeneity.
References in periodicals archive ?
All genetic variances were significantly larger than zero.
Genetic (co)variance components (1) [[sigma].sup.2.sub.a] c [[sigma].sup.2.sub.e] Birth 0.004 [+ or -] 0.016 0.164 [+ or -] 0.247 [+ or -] 0.02 weight 0.024 Genetic parameters (2) [h.sup.2.sub.a] [c.sup.2] [e.sup.2] Birth weight 0.011 [+ or -] 0.04 0.394 [+ or -] 0.595 [+ or -] 0.053 0.045 [[sigma].sup.2.sub.p] Birth 0.416 [+ or -] 0.025 weight Birth weight (1) [[sigma].sup.2.sub.a]: Direct additive genetic variance; c: Variance attributed to the permanent maternal environment; Residual variance; [[sigma].sup.2.sub.e]: Phenotypic variance.
The genotypic values of SCA and GCA were broken down into 1804 additive and dominance effects, and the sum of those effects nearly recovered the genetic variance of the hybrids.
If bioassays are performed from only 1 or 2 egg dates, there is a great potential for the total genetic variance of the field-collected population to be under-represented.
Narrow sense heritability was estimated as the proportion of additive genetic variance to total variance as follows, where the terms are the variance components for the terms in the earlier mentioned model:
Instead, Threadgill and colleagues used the SNP maps of the 15 mouse strains to identify genetic variance between strains of mice that differed in liver toxicity due to acetaminophen.
Genetic variance detection technologies for pharmacogenomics.
where H is the heritability on an entry-mean basis, b is the number of replicates per site, n is the number of selection sites, [[sigma].sup.2.sub.Af] is the additive genetic variance among families or inbred lines, [[sigma].sup.2.sub.e] is the plot-to-plot error, and [[sigma].sup.2.sub.Gf] is the genetic component of variance among families.
We ate currently screening variation at several allozyme loci, which will allow for comparison of many important population parameters such as percentage of polymorphic loci, average number of alleles per locus, average heterozygosiry, and the partitioning of genetic variance within and among populations.
Genetic variance in populations is preserved through the balance of competing forces.
Cambridge, MA and Milford, MA 6/22/00-Waters and Variagenics have entered into a strategic alliance to develop NuCleave genetic variance reagent kits.
Through a simple mathematical derivation, the genetic variance of z can be expressed by: