In 1962, André Lwoff, Robert Horne, iyo Paul Tournier waxay ahaayeen kuwa ugu horeeyay ee soo saara habka kala soocida fayraska, oo ku saleysan nidaamka Linnaean. Nidaamkan ku saleysan kala soocida phylum, fasalka, amarka, qoyska, jinsiga, iyo noocyada. Fayrasyada waxaa loo kala saaray si waafaqsan sifooyinka ay wadaagaan (maahan kuwa martida u ah) iyo nooca nucleic acid ee sameynta genomes-kooda.
isku mid ahaanshaha