Haplotype distributions for six kinds of miRNAs across 12 animal species.

The number (1, 2, 3) shows that miRNA sequence can be produced by different precursors.
Taxonomic abbreviations: aga, Anopheles gambiae; age, Ateles geoffroyi; ame, Apis mellifera; bfl, Branchiostoma floridae; bmo, Bombyx mori; bta, Bos taurus; cap, Capitella sp.l; cbr, Caenorhabditis elegans; cel, Caenorhabditis elegans; cfa, Canis familiaris; cin, Ciona intestinalis; csa, Ciona savignyi; dan, Drosophila ananassae; der, Drosophila erecta; dgr, Drosophila grimshawi; dme, Drosophila melanogaster; dmo, Drosophila mojavensis; dpe, Drosophila persimilis; dps, Drosophila pseudoobscura; dre, Danio rerio; dse, Drosophila sechellia; dsi, Drosophila simulans; dvi, Drosophila virilis; dwi, Drosophila willistoni; dya, Drosophila yakuba; fru, Fugu rubripes; gga, Gallus gallus; ggo, Gorilla gorilla; hsa, Homo sapiens; lca, Lemur catta; lgi, Lottia gigantea; lla, Lagothrix lagotricha; mdo, Monodelphis domestica; mml, Macaca mulatta; mmu, Mus musculus; mne, Macaca nemestrina; oan, Ornithorhynchus anatinus; odi, Oikopleura dioica; ppa, Pan paniscus; ppy, Pongo pygmaeus; ptr, Pan troglodytes; rno, Rattus norvegicus; sko, Saccoglossus kowalevskii; sla, Saguinus labiatus; spu, Strongylocentrotus purpuratus; ssc, Sus scrofa; tca, Tribolium castaneum; tni, Tetraodon nigroviridis; xla, Xenopus laevis; xtr, Xenopus tropi.