Figure 3
From: Identification of ciliary and ciliopathy genes in Caenorhabditis elegansthrough comparative genomics

The candidate gene dataset (Additional data file 2) is enriched with genes whose SAGE tag expression profile positively correlates with that of daf-19. 'Random genes' (black line) represents the correlation profile in gene expression between daf-19 and a random set of 1,000 genes in C. elegans; 'before filtration' (blue line) represents the correlation profile between DAF-19 and a raw list of genes that contain all putative X-box motifs in their promoters; and 'after comparative filtration' (green line) represents the correlation profile between DAF-19 and the set of filtered genes that contain X-box motifs in orthologous genes in three Caenorhabditis species.