Figure 1

Cross design and wing phenotypes. Color pattern phenotypes observed in crosses between 'grand-parental' H. himera (middle) and H. erato cyrbia (left) and H. erato notabilis (right) resulting in two pairs of F1 parents with females on left, males on right. Each pair of F1 parents produced F2s with H. himera × H. erato cyrbia offspring (A) and the H. himera × H. erato notabilis offspring (B). In both F2 families, the observed phenotypic differences among individuals are consistent with the interaction of two co-dominant loci, as described in the Methods.