Sex-biased expression of microRNAs in <i>S.</i><i>mansoni</i>.

<p>A) Smear plot of normalized expression levels (log fold-change) for microRNAs in male and female samples against the total read counts (log average count). Black line indicates equal expression in both sexes. Grey lines represent 2-fold changes between samples. Filled circles are microRNAs with a significant expression fold change between sexes (see <a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0002402#s4" target="_blank">Materials and Methods</a>). B) Relative enrichment/paucity of sex-biased microRNAs in the sex chromosome (ZW). Each expression level fold-change threshold (x-axis) is plotted against the logarithm of the p-value (Fisher's exact test) for enrichment or paucity in the sex chromosome.