Figure 1
From: Similarities and differences of polyadenylation signals in human and fly
Distribution of 3' EST tags in human and Drosophila melanogaster genomes. A: Distribution of trusted tags per gene. In both species, the distribution of tags per gene follows a power law, with similar exponents (-2.29 for human tags and -2.05 for Drosophila tags). B: 3'UTR length distributions, in human and Drosophila genes, the average length for humans is 995 bp, for Drosophila it is 200 bp. Each point is the number of 3'UTRs of given length. C: Number of polyadenylation clusters in genes having more than 1 cluster, human genes have up to 25 separate 3P clusters (mean number of clusters per human gene is 2, 3, for drosophila genes 1.11).