Figure 2: Genome-wide divergence among Papilio species.
From: Outbred genome sequencing and CRISPR/Cas9 gene editing in butterflies
Pairwise genetic divergence among P. xuthus, P. machaon and P. polytes was calculated in 50-kb windows. This yielded 70 highly divergent genomic regions, windows in the upper 95th percentile in all three comparisons, encompassing 915 genes. When overlaid with signatures of positive selection and differential expression throughout development, 11 genes (highlighted in yellow) emerged as strong candidates for a role in recent diversification, including frizzled. Degree of freedom (df) is the density of different single-nucleotide polymorphisms (SNPs) per bp of each 50-kb window.
