Fig. 2
Comparison between the lost introns and conserved introns in Caenorhabditis. The 10th to 90th percentiles of the data are presented. A The lost introns are significantly shorter than the conserved introns of the same genes. B The lost introns are closer to the 3′-ends of genes than conserved introns of the same genes. Three thousand one hundred ninety-nine intron-lost genes in Caenorhabditis were used in these two comparisons. The original data for this figure were deposited in and Additional file 1: Table S4