Figure 2

Comparative analysis of OGCs in Metazoa. For all species, the bar corresponding to each analyzed feature of the observed overlapping gene sets is followed by the bar corresponding to the random expectation. Since the simulations were repeated ten times, the corresponding standard deviation is associated to the random bars. A. OGC composition. OGCs were analyzed on the basis of the number of genes composing each cluster. The OGCs with more than 4 components are 5 in human, 11 in mouse, 5 in zebra fish, 48 in fly and 7 in worm. B. Type of overlap. Occurrence of partial and complete overlaps in both 2-component and multicomponent OGCs. C. Gene reciprocal arrangement. Distribution of OGCs according to the overlap type (refer to Figure 1). D. Features of the overlapping regions. The plot reports the number of overlaps involving coding sequence for one (CDS/UTR or CDS/intron overlaps) or both genes and the number of overlap involving only noncoding sequence (UTR/UTR and UTR/intron).