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Figure 1. Variance decomposition model for bivariate analysis. Representation of a triangular (Cholesky) variance decomposition into additive genetic (A), nonadditive genetic (D) and nonshared environmental influences (E). a11 through a22 = path coefficients for the additive genetic variance component; d11 through d22 = path coefficients for the nonadditive genetic variance component; e11 through e22 = path coefficients for the nonshared environmental variance component; dashed line = nonsignificant path, dropped from the final model.
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