Fig. 2

Normalized 23–29-nt reads on P(lArB) regions in MI and PI lineages. Normalized ovarian 23–29-nt reads mapping to different regions of P(lArB): plasmid (A), rosy (B), Adh (C), lacZ (D) genes, and the P-derived sequences (E) in the MI H and PI D sublines (Additional file 2: Table S3). All the sequences, either exogenous (lacZ, plasmid, and P) or endogenous (rosy, Adh) from the Drosophila genome, have similar kinetics of producing a progressive increase number of 23–29-nt small RNAs over generations