Figure 4

Number of genetically robust miRNAs with FDR-controlled P -values of < 0.05, 0.01, 0.005, and 0.001 at different threshold levels. For each real pre-miRNA, the robustness , i = 1, 2, ⋯, 9 is compared with 1,000 random sequences (a) and random pseudo pre-miRNAs (b).