Figure S1. Gene organization of control regions and WANCY cluster in snake mitochondrial genomes. Circular mitogenomes are linearly depicted as an open bar divided into individual genes. Only relevant genes are shown, and in a way that does not reflect actual gene lengths. B, C, D, E came from Kumazawa et al. [16]; A, F from Yan et al. [18]; G from Chen and Zhao [19]. The H- and L- strand encoded genes are denoted above and below each gene box. Transfer RNAs are indicated by their single-letter abbreviations. Abbreviations: 12S, 16S, and P* stand for 12S rRNA, 16S rRNA, and a pseudogene for tRNAPro gene, respectively. Taxa for which have been reported to date are listed in Additional file 5: Table S2. (PDF 612 kb