Na te pouri i wehewehe ai ngā huatau (i whakawātea i mua hei Kingdom Monera) ki ngā rōpū e rua, e kīa nei ko Euteriria me te Archaeteria, e kī ana he nui te rerekētanga iranga i waenganui i ēnei rōpū e rua, i waenganui i aua rōpū me ngā eukaryoita katoa.