Figure 3
From: Identification of novel exons and transcribed regions by chimpanzee transcriptome sequencing
Establishing a threshold for expression of genes and transcribed regions. Comparison between the coverage of the last 500 bp of RefSeq exons (red) and an equal number of randomly sampled regions with the same length distribution (blue). The x-axis shows the dcpm values and the y-axis denotes the frequency of exons or random regions with a certain dcpm. Random regions do not overlap with any RefSeq exon and regions with no coverage are not shown in the distributions. The cut-off (yellow line) is placed at the top 5% in the random distribution, which is different for each sample.