Figure 2

Tree (Chromosome II). Inferred mean-field phylogeny of Chromosome II derived from a sampled concatenated gene sequence of single-copy orthologs distributed around the entire Chromosome II. The species tree is fully resolved and has 100% bootstrap support on all nodes (10000 replicates). The list of genes and included locus tags is found in Additional file 2, supplementary materials. Only closed genomes were included in this analysis.