Fig. 3: Genetic interactions among QTL on the X chromosome and Muller element E differ among body parts.

Mean pigmentation scores for the thorax, leg, and wing spot are shown based on genotype positions linked to the estimated max LOD score from QTL mapping in each backcross (see Table 1 and Methods). The superscripts “ele” (red) and “gun” (blue) indicate alleles at peak QTL positions from D. elegans HK and D. gunungcola SK, respectively. Error bars indicate 95% confidence intervals for the phenotype of each genotypic class. The number of flies (N) with each genotype (red for D. elegans HK X allele; blue for D. gunungcola SK X allele) included for each trait is shown below each plot, excluding backcross progeny with missing or ambiguous genotypes or missing phenotype data.