Figure 4

Correlations between estimated total breeding values (ETBV) for full-sibs (FS) and for half-sibs (HS) for a correlation between direct and indirect genetic effects of −0.8 (a) or +0.8 (b). ^aHeritabilities are the ratio of additive genetic variance to the corresponding “phenotypic” variance; for direct effects ${\mathit{h}}_{\mathit{D}}^2={\mathit{\sigma }}_{{\mathit{A}}_{\mathit{D}}}^2/{\mathit{\sigma }}_{{\mathit{P}}_{\mathit{D}}}^2$, and for indirect effects ${\mathit{h}}_{\mathit{S}}^2={\mathit{\sigma }}_{{\mathit{A}}_{\mathit{S}}}^2/{\mathit{\sigma }}_{{\mathit{P}}_{\mathit{S}}}^2$.