Fig. 2

Size distribution of P. tetraurelia 5′ and 3′ UTRs. a Histograms of the distribution of predicted 5′ UTR sizes (gray) and 5′ UTR sizes confirmed by a TSS prediction using Cap-Seq data. b Histograms of the distribution of predicted 3′ UTR sizes (gray) and 3′ UTR sizes confirmed by a TTS prediction using the polyA⁺ RNA-Seq read pairs. The Cap-seq confirmed 5′ UTRs have a mean size of 21.7 nt and a median size of 19 nt. The 3′ UTRs predicted from polyA tracts have a mean size of 44.6 nt and a median size of 44 nt