Highest posterior density (HPD) intervals for effects parameters fitted to the scores of fluctuating asymmetry in skull shape. Horizontal bars show for each parameter the region of highest posterior density that covers 50% (thick line) and 95% (thin line) of the posterior probability. The first panel includes general effects (inbreed overall, strain-specific effects of additive genetics and inbreeding, and maternal effect), the second panel includes effects peculiar to specific strain pairs, the third panel accounts for sex-specific deviations of the general effects, and the fourth panel encompasses sex-specific deviations from the strain pair-specific effects. The “v” and “w” labels in the second and fourth graphs refer to symmetric and asymmetric effects.