Gene maps of chromosome XIII are representative of the relationship between clusters of genes in the various datasets indicated in each panel. Vertical blue lines indicate the position of genes in the indicated datasets. Pink rectangles indicate clusters of genes detected by Pyxis that are unlikely to have formed by chance (p ≤ 0.05). Roman numerals indicate chromosome number. Additional Pyxis maps for all chromosomes are available in additional files 3, 4, 7.