σAD = direct genetic variance; σC = variance due to common rearing environment; σTANK = variance of experimental tank; σP = phenotypic variance; h = heritability = σAD/σP; bounded to zero.
The variance of the experimental tank effect increased between recordings 1 to 3 and explained from 6% (caudal fin) to 36% (second dorsal fin) of the total phenotypic variation at recording 3. σAD = direct genetic variance; σC = variance due to common rearing environment; σTANK = variance of experimental tank; σP = phenotypic variance; h = heritability = σAD/σP; bounded to zero.
LogL = change in Log likelihood relative to the traditional animal model; P-values are given in parentheses; σAD = direct genetic variance; σAS = social genetic variance; σADS = direct-social covariance; σC = variance due to common rearing environment; σTANK = variance of experimental tank; σTVB = variance of the total breeding value; σP = phenotypic variance; rAS,AD,T = σTVB/σP; bounded to zero.
Part of the variance due to common factors was moved into the country-specific variance.
Inspection of the sum of the eigenvalues derived from the variance due to common factors (Table 2) and the country-specific variances from the different fits revealed that some re-partioning of the genetic variance occurred with decreasing fit.
In factor analysis parlance, factor loadings are the correlations between the variables and the two factors, as they are extracted by default, and communality refers to the proportion of each variable's variance explained by the suggested factor structure (or the proportion of variance due to common factors).
Heritability Estimation Under the above kinship structure, a phenotype vector y has variance-covariance matrix var (y ) = K + σ g + 2 + K − σ g − 2 + I σ e 2, where σ g + 2 is the variance attributed to common parent of origin, σ g − 2 is the variance attributed to opposite parent of origin and σ e 2 is the environmental variance.
In older males, the variance due to unique environmental influences (E) increased with increasing mean real estate price, and the variance due to common environmental influences (C) was larger for higher levels of parental education.
The variance due to common rearing environment prior to the recording period was zero or non-significant for all four fins and all three recordings.
In addition, we separately analyzed monozygotic (MZ) and dizygotic (DZ) twin data, to estimate the relative proportion of the phenotypic variance attributable to common environmental effects.
