phenotypic variance


Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.
Related to phenotypic variance: environmental variance, phenotypic variation

phenotypic variance

the amount of variation in a phenotypic trait amongst individuals in a population.

variance

one of the measures of the dispersion of data; the mean squared deviation of a set of values from the mean.

additive genetic variance
that portion of phenotypic variance which is due to the additive effect of genes (VA).
analysis of variance
a statistical method for comparing values, expressed in terms of means or variance, of one or more variables in several subgroups of a population. Called also anova.
non-additive genetic variance
that portion of phenotypic variance which is due to epistatic interactions (VI) and dominance deviations (VD).
non-genetic variance
that portion of phenotypic variance which is due to non-genetic effects such as environment (VE).
phenotypic variance
a measure of the extent to which individuals vary in their phenotype (VP). VP = VA + VD + VI + VE.
variance ratio distribution
References in periodicals archive ?
5) Comparison-wise p-value of the test statistic against the null hypothesis of no SNP effect under the one SNP model (6) Proportion of phenotypic variance explained by each SNP or across all of the significant SNPs for the given trait.
6]), and the phenotypic variance appeared to be an overestimation in proportion to the significant threshold.
Power to detect polar overdominance (POD) QTL under different genetic models, estimates and standard deviations (in bracket) of POD QTL effects and positions, and proportion of phenotypic variance explained by POD QTL based on simulated data Power to detect QTL (%) (b) POD QTL effect (allele (allele Mend Pat Mat Pod Pod frequency) (a) Exp Exp I II Design I (N = 512) I 0.
However, phenotypic variance estimates of MS, BF or EMA were much greater than those estimated by Lee et al.
The increased estimates of phenotypic variances by WU and WC that occurred were partly due to the inclusion of weaning age variances.
92% of the phenotypic variance in body weight at 7 weeks, whereas the other QTLs accounted for small proportions of the phenotypic variance, ranging from 1.
9%) of the phenotypic variance with the highest value estimated for BTA-61748-no-rs SNP on BTA28 for ChestDep.