Figure 2

Gene rearrangements found in the lancelets. Gene order rearrangement events of lancelet mitogenomes were mapped onto the phylogenetic tree. Bars (1–4) correspond to the unique gene order rearrangements as shown in right genome maps. Names of 13 mitochondrial protein genes, abbreviated as in text. Twenty-two tRNA genes, denoted by standard single letter amino acid code. MUS in the maps refers to major unassignable sequence in the mitogenome. Genes encoded on light strand of the mitogenome underlined.