<p>(A) The percentage of RrmiRNAs and NRrmiRNAs in the <i>A. thaliana</i>, <i>P. trichocarpa</i>, <i>O. sativa</i> and <i>S. bicolor</i> genomes. (B) The percentage of repetitive element-related miRNAs located in intragenic regions compared to all known miRNAs in the corresponding genome. (C) The percentage of repeat-related miRNAs with differing degrees of conservation.</p