Results from crosses between H. m. melpomene and H. m. rosina.

Individuals are shown as a composite of the ventral and dorsal side of each wing (left dorsal, right ventral). Unexpectedly the F₁ brood was segregating for presence of yellow hindwing bar (22 out of 44 individuals). Half of the individuals with yellow hindwing bar had a fuzzy bar (n = 11) as show in this picture; the other half had a yellow bar similar to the maternal race (n = 11). Brood sex ratio was skewed towards males (3∶1). Numbers below phenotypes indicate number of individuals (#) with each phenotype and results of Yb locus genotyping (presence of paternal allele a₁: presence of paternal allele a₂). All individuals with yellow hindwing bar had the paternal allele a₁ whereas all individuals with paternal allele a₂ had a shadow hindwing bar.