gene/locus Animals COI, Cytb, 12S, 16S Plants matK, rbcL, psbA-trnH, ITS Bacteria 16S, COI, rpoB, cpn60, tuf, RIF, gnd Fungi ITS, TEF1α, RPB1, RPB2, 18S, 28S Protists ITS, COI, rbcL, 18S, 28S, 23S Purty e Chatterjee, 2016. (https://austinpublishinggroup.com/biotechnology-bioengineering/fulltext/ajbtbe-v3-id1059.php) Regiões conservadas e variadas