Domain Biology

Archaea bacteria and eukarya.

Domain biology. In biological taxonomy a domain also superkingdom realm or empire is the highest taxonomic rank of organisms in the three domain system of taxonomy devised by carl woese et al. In biological taxonomy a domain also superregnum superkingdom empire or regio is the highest taxonomic rank of organisms higher than a kingdom. The arrangement of taxa reflects the fundamental evolutionary differences in the genomes.

According to this system the tree of life consists of three domains. There are currently 3 agreed groups at this level the archaea domain bacteria domain and eukarya domain. In biology a domain refers to the largest of all groups in the classification of life.

Eucaryota eukaryotes archaea and bacteria older systems include the two empire system prokaryota and eukaryota and the six kingdom system listing protista archaebacteria eubacteria fungi plantae and. According to the three domain system of carl woese introduced in 1990 the tree of life consists of three domains. In biological taxonomy a domain also superregnum superkingdom or empire is a taxon in the highest rank of organisms higher than a kingdom.

Archaea bacteria and eukarya. Domain or its synonyms is the most inclusive of these biological groupings. All life that has a cell nucleus and eukaryotic membrane bound organelles is included in eukar.