Fig. 3. Splice variation of the EGL-15 C terminus. Analysis of egl-15 transcripts revealed multiple splice variants affecting the very C terminus of EGL-15. The C-terminal egl-15 exons are depicted on the left. Thickly edged rectangles represent alternate exons used between the common exons 17 and 19. Shading indicates coding regions. The numbers of cDNAs of each type isolated from each pool are shown on the right. C-terminal alternate forms are represented in approximately equal proportions in both 5A- and 5B-containing isoforms. Two YK ESTs extend to exon 5; both yk36b5 (Type 1) and yk322c4 (Type 3) contain exon 5B. Asterisks indicate stop codons.