Chromosomal distribution of small RNAs and sRNA-producing loci.

<p>Pie graphs for total reads (A) and unique reads (B) are showing the relative abundance of sRNAs located in tRNAs, rRNAs, intergenic, exonic and intronic regions in ∆<i>ku70</i>FRT2. Alignments of sRNA-producing loci of ∆<i>ku70</i>FRT2 (C) and ∆<i>dcl2</i>∆<i>dcl1</i> (D) show that the number of sRNAs that map to both DNA strands of one feature have strongly increased and that the fraction of sRNA loci that align to exonic regions in sense orientation has decreased substantially in ∆<i>dcl2</i>∆<i>dcl1</i> compared to ∆<i>ku70</i>FRT2.