Figure 4. Novel miRNAs, expanded miRNA families and rapidly evolving genes in donkey, which are associated with the meiosis pathway.

(a) Expanded miRNA families (red) in the donkey genome. (b) Five novel miRNAs targeting meiosis in the donkey genome identified by RNA-seq. (c) The donkey meiosis pathway. Small boxes indicate that the gene is regulated by novel miRNAs, expanded miRNA families or rapidly evolving genes.