Fig. 2

Distribution of polymorphisms in Xiphophorus genome among 24 chromosomes. a The histogram rings in the Circos plot represent the number of SNCs in 100 kb bins normalized by 3000. Tracks from outside circles to inner circles are polymorphisms between X. maculatus and X. couchianus (orange), between X. maculatus and X. hellerii (light green), only in X. maculatus (purple), only in X. couchianus (red) and only in X. hellerii (dark green). The connecting links in the inner circle show the inter-chromosomal rearrangements between X. maculatus and X. couchianus (orange links) and X. maculatus and X. hellerii (green links). b Distribution of genes with high impact polymorphisms in the genome. The black, orange, blue and green bars represent the location of all protein coding genes in X. maculatus genome, genes with high impact variants (see Materials and Methods) in X. couchianus relative to X. maculatus, shared genes with high high impact variants between in X. couchianus and X. hellerii relative to X. maculatus, genes with high impact variants in X. hellerii relative to X. maculatus