A representative result of using PASS to scan a segment of the genomic sequence of Arabidopsis. The top part of the image was downloaded (screen shot) from TAIR web page (Seqviewer) showing the gene annotation units (from chromosome 4, nucleotides 1,100,000 to 1,150,000). Each gene is label with an AGI locus ID. The lower part is the scores of this region by PASS. The double-headed arrows point to the relative location of the poly(A) sites and the peaks of PASS scores. The question marks indicate the regions of unknown gene annotation (see text for detail discussion on this). Note that the gene units on the reverse orientation are not predicted because PASS only predicts the sense direction as in mRNA.