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variance
(redirected from additive genetic variance)

    Also found in: Dictionary/thesaurus, Medical, Legal, Encyclopedia, Wikipedia, Hutchinson 0.06 sec.
Variance
A measure of dispersion of a set of data points around their mean value. The mathematical expectation of the average squared deviations from the mean. The square root of the variance is the standard deviation.
variance
A statistical measure of the variability of measured datum from the average value of the set of data. A high variance, indicating relatively great variability, also indicates that the average is of minimal use in projecting future values for the data. Standard deviation is the square root of variance. Financial analysts use both statistical measures to weigh investment risk. Compare covariance. See also risk.


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? Mentioned in ? References in periodicals archive
 
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:
Selective breeding Greenlip abalone (Haliotis laevigata): preliminary ... by Kube, P.D.; Appleyard, S.A.; Elliott, N.G. / Journal of Shellfish Research
Thus, selective breeding and domestication efforts that emphasize selection on additive genetic variance should be effective, and our data provide no reason to believe that more complicated breeding schemes designed to use nonadditive heterotic effects, whatever the mechanism, would be advantageous over the judicious selection or construction of a base population with low inbreeding depression.
Out-crossing among commercial strains of the northern quahog, ... by Reece, Kimberly S. / Journal of Shellfish Research
05); therefore even when growth rates differed significantly among environments, the additive genetic variance did not vary from location to location, with the exception of Putemtln and Hueihue for live weight and shell height respectively.
Selection response for growth rate (shell height and live weight) in ... by Vergara, Ana M. / Journal of Shellfish Research
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