Figure 3

Operons in the Ciona genome. In the genomic region indicated, 5'-ESTs (yellow boxes) and 3'-ESTs (purple boxes) clearly indicate that there are (a) two and (b) three genes encoded. (Note that the genomic region indicated in (a) is not included in the version 2 genome and there are no version 2 gene models.) Previous models (pink boxes) failed to model these loci precisely and the present study yielded gene models that faithfully reflect cDNA evidence. The lower panel in (a) is a magnification of the region around the intergenic region of this operon and the inset shows corresponding DNA sequences.