Figure 1

Gene maps of four complete and two partial vermetid mt genomes. Blue arrows represent protein-encoding genes; red arrows represent rRNA genes; and circles represent tRNA genes. Arrows indicate the direction of transcription (clockwise = "+" strand). Genes are labeled according to their standard abbreviations. For tRNA genes, green circles represent those genes located on the "+" strand and white circles those located on the "-" strand. Regions of unassigned nucleotides (presumed non-coding sequences) are not identified on these maps. As is the standard convention for metazoan mt genomes, cox1 has been designated the start point for the "+" strand. The asterisks (*) in D. maximum and T. squamigerus denote stretches of sequences (presumed pseudogenes) with high similarity to portions of complete genes. For exact locations of each gene, as well as unassigned regions, see Tables 2-7.