Domain (biology)
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Superdomain redirects here.<imagemap> Image:Biological_classification_L_Pengo.svg|150px|The various levels of the biological classification system. rect 100 27 225 68 Species rect 100 90 225 132 Genus rect 100 154 225 196 Family rect 100 217 225 259 Order rect 100 280 225 322 Class rect 100 344 225 386 Phylum rect 100 407 225 449 Kingdom rect 100 471 225 513 Domain rect 100 534 225 576 Life default Image:Biological_classification_L_Pengo.svg desc none </imagemap>
Image:Magnify-clip.png|right default Image:Biological classification L Pengo.svg desc none
</imagemap>The hierarchy of biological classification's major eight levels. Life is divided into domains, which are subdivided into further groups. Intermediate minor rankings are not shown.In biological taxonomy, a domain (also superregnum, superkingdom, or empire) is the highest taxonomic rank of organisms, higher than a kingdom. Domain (or its synonyms) is the most inclusive of these biological groupings. Its divisions are Archaea, Eubacteria and Eukaryota. The arrangement of taxa reflects the fundamental evolutionary differences in the genomes. There are several modern alternative domain classifications of life. Among them are:
- The two-empire system or Superdomain system, with top-level groupings of Prokaryota (or Monera) and Eukaryota empires.
- The six-kingdom system with top-level groupings of Protista, Archaebacteria, Eubacteria, Fungi, Plantae, and Animalia.
and the most recent,
- The three-domain system of Carl Woese, introduced in 1990, with top-level groupings of Archaea, Bacteria, and Eukaryota domains.
As these groupings depend primarily on the analysis of genetic sequence data and cladistics, additional proposed arrangements are to be expected.
[edit] See also
Taxonomic ranks
| ||||||||
|---|---|---|---|---|---|---|---|---|
| Domain or | Magnorder | |||||||
| Superkingdom | Superphylum/Superdivision | Superclass | Superorder | Superfamily | Superspecies | |||
| Kingdom | Phylum/Division | Class | Order | Family | Tribe | Genus | Species | |
| Subkingdom | Subphylum | Subclass | Cohort | Suborder | Subfamily | Subtribe | Subgenus | Subspecies |
| Branch | Infraphylum | Infraclass | Legion | Infraorder | Alliance | Infraspecies | ||
| Microphylum | Parvclass | Parvorder | ||||||
an:Dominio (biolochía) ca:Domini taxonòmic da:Domæne (biologi) de:Domäne (Taxonomie) et:Domeen (bioloogia) es:Dominio (biología) eo:Domajno (biologio) fr:Classification phylogénétique gl:Dominio (bioloxía) ko:도메인 (생물학) hr:Domena (biologija) is:Lén (líffræði) it:Dominio (biologia) lt:Domenas hu:Domén (rendszertan) mt:Dominju nl:Domein (biologie) ja:ドメイン (生物学) no:Domene (biologi) nn:Biologisk domene pms:Domini (tassonomìa) pl:Domena (biologia) pt:Domínio (biologia) ru:Домен (биология) scn:Duminiu (bioluggìa) simple:Domain (biology) sv:Domän (biologi) th:เขต (ชีววิทยา) vi:Vực (sinh học) tr:Üst âlem
uk:Домен (біологія) vec:Domìnio (tasonomìa) zh:域 (生物)
