<p>(A) The percentage of miRNA families and miRNAs arising by tandem duplication with respect to the total number of miRNA families containing at least one miRNA, and the number of members of the corresponding miRNA family, respectively, for each species tested. (B) The average miRNA copy number in tandemly duplicated regions. (C) The percentage distribution of tandemly duplicated miRNAs on the same or opposite strands. (D) The percentage of conserved or species-specific tandemly duplicated miRNAs with respect to the total number of observed tandemly duplicated miRNAs for each species tested.</p
