Table 2.
Statistics on non-coding (NC) sequences of ascidian mitochondrial genomes
| % NC (bp) | N°b | NC length distribution | Longest NC | ||||
| Speciesa | 20–39 bp | 40–99 bp | > 99 bp | bp | Locationc | ||
| Phallusia mammillata | 1.94 (283) | 21 | 0 | 3 | 0 | 65 | trnC-nad4L |
| Phallusia fumigata | 5.89 (915) | 25 | 2 | 2 | 5 | 134 | cox1-trnG(GGN) |
| Ciona intestinalis sp. A | 2.9 (429) | 22 | 2 | 4 | 0 | 85 | nad1-rrnL |
| Ciona intestinalis sp. B | 1.8 (263) | 23 | 1 | 2 | 0 | 71 | cox3-trnK |
| Ciona savignyi | 2.9 (428) | 25 | 1 | 1 | 1 | 194 | nad1-trnP |
| Halocynthia roretzi | 3.09 (456) | 29 | 5 | 1 | 1 | 112 | nad4-trnV |
a Sequence AC numbers are reported in Additional file 2.
b Number of non-coding sequences, including spacers 1 bp long.
c The location of NC sequences is defined by flanking genes.