Figure 3.

Alignment generated by WUBLASTN between C. elegans clone F08G2 and C. briggsae clone G42J05. This alignment contains a U2 snRNA gene. Underlined is the actual U2 gene (coordinates: 3128–3313). The secondary structure (placed above the alignment) is provided by [43] and includes a pseudoknot. We observe four compensatory mutations (represented with "^*") which conserve the secondary structure of the U2 gene.