Positional bias distribution of ncRNAs with respect to neighbour genes.

<p>(A) Relative frequencies of ncRNAs with respect to the distance from neighbour genes. 100 kb adjacent to TSS or TTS of genes is shown in these plots. 3′ END means the ncRNA is located in the 3′ flanking region of its neighbour gene. 5′ END means the ncRNA is located in the 5′ flanking region of its neighbour gene. “Gene intervals” refers to the intergenic region of two adjacent genes. (B) Relative frequencies of ncRNAs from neighbour genes partitioned with respect to transcription orientation. The internal boxes represent the zoom in view of the relative frequencies from 5 kb to 20 kb.