Figure 5

Exons in the Arabidopsis thaliana and Caenorhabditis elegans genomes annotated and predicted as mutually exclusive exons. The graphs represent the number of predicted initial, internal and 3’-terminal exons. Some of these predicted exons were already included in the annotations from Phytozome and Wormbase. The initial exons are supposed to be spliced by the multiple promoters mechanism and the 3’-terminal exons by the multiple poly(A) site mechanism.