Homozygous B6 (BB), C3H (CC), or heterozygous (BC) genotype at all five QTL positions, separated by sex, are shown. The underlying genotypic effects of the QTLs on fat mass differ between the sexes. Coefficients of determination (R 2) are shown along with associated ANOVAs *p < 0.05, **p < 0.01, ***p < 0.001.