Figure 1From: Characterisation and expression of microRNAs in developing wings of the neotropical butterfly Heliconius melpomeneSize distribution of sequenced small RNAs in Heliconius melpomene melpomene (black bars) and H. m. rosina (yellow bars). % of sequenced reads for each nucleotide size class are given both with (a) and without (b) the most abundant miRNA, miR-31.Back to article page