Fig. 3

Isoforms in coding and non-coding regions. a Histograms showing the distribution of offsets for 5′ and 3′ ends, and internal splice junctions, as percentage of the count for zero offset. Horizontal axis shows offset in base pairs (note that the axis has variable bin sizes). Red, the total number of events used to create each plot. Note, this is the same figure as Fig. 1a but it shows coding and noncoding exons separately. b Number of conservative coding and non-coding isoforms for each gene, as a function of the observed number of transcripts