Genomic architecture of adaptive color pattern divergence and convergence in Heliconius butterflies

Divergence and association between divergent H. melpomene color pattern races across the B/D interval. The gray shaded area indicates the region of peak divergence and association identified in the co-mimic H. erato (Fig. 2). The solid line indicates sliding window (15-kb window size, 5-kb step size) subpopulation differentiation () between the H. melpomene postman and rayed phenotypes for individuals from two hybrid zones (Peru, Colombia; n_postman = 7; n_rayed = 7), requiring a minimum of 75% of individuals genotyped for each phenotype at each position and data for at least 20% of positions in the window. A baseline subpopulation differentiation of = −0.03 was calculated from genomic scaffolds unlinked to color pattern. The dots indicate genotype by phenotype association calculated for biallelic SNPs using a Fisher's exact test for both hybrid zones (n_postman = 7; n_rayed = 7), requiring a minimum of 75% of individuals genotyped for each phenotype at each SNP. The black dots indicate association for the 430 SNPs perfectly associated with phenotype.