Pets

CR y = b A(yx) R x σ A(y) = r A i x h x σ A(x) σ A(x) = i x h x r A σ A(y) Because: h = σ / σ , so σ = h σ 2 2 2 2 y A(y) P(y) A(y) y P(y) Therefore: CR y = i x h x h y r A σ P(y) 2 If we directly select for trait y, we will get the selection effect: R y = i y h y σ P(y) ; meanwhile, ...

Population so the variance is just the average of the squares of these values. The specific calculation is as follows: 6.2. Calculation of component variances Calculate cumulative variance (variance of seed values): Genotype Frequency Cumulative value (breeding value) Frequency x (Breeding value) 2 ...