QTLs are indicated by phenotype and grouped by samples included in the analysis: both diets (A), the high-fat-fed animals (B), the low-fat-fed animals (C), and locus-by-diet interaction (D). Location along chromosome 13 is indicated by marker identity. Tick marks along the x-axis indicate 2-cM intervals in F2 Haldane’s centimorgan units. QTL effects are indicated by lines plotting the LOD score for each phenotype and extending across
the 1-LOD drop confidence interval for each phenotype.