<Li> In a publication prior to 1 January 1890, if only one infraspecific rank is used, it is considered to be that of variety . (Article 37.4) This commonly applies to publications that labelled infraspecific taxa with Greek letters, α, β, γ,...</Li> <P> Classifications of five species follow: the fruit fly familiar in genetics laboratories (Drosophila melanogaster), humans (Homo sapiens), the peas used by Gregor Mendel in his discovery of genetics (Pisum sativum), the "fly agaric" mushroom Amanita muscaria, and the bacterium Escherichia coli . The eight major ranks are given in bold; a selection of minor ranks are given as well . </P> <Table> <Tr> <Th> Rank </Th> <Th> Fruit fly </Th> <Th> Human </Th> <Th> Pea </Th> <Th> Fly agaric </Th> <Th> E. coli </Th> </Tr> <Tr> <Td> Domain </Td> <Td> Eukarya </Td> <Td> Eukarya </Td> <Td> Eukarya </Td> <Td> Eukarya </Td> <Td> Bacteria </Td> </Tr> <Tr> <Td> Kingdom </Td> <Td> Animalia </Td> <Td> Animalia </Td> <Td> Plantae </Td> <Td> Fungi </Td> <Td> </Td> </Tr> <Tr> <Td> Phylum or Division </Td> <Td> Arthropoda </Td> <Td> Chordata </Td> <Td> Magnoliophyta (Tracheophyta) </Td> <Td> Basidiomycota </Td> <Td> Proteobacteria </Td> </Tr> <Tr> <Td> Subphylum or subdivision </Td> <Td> Hexapoda </Td> <Td> Vertebrata </Td> <Td> Magnoliophytina (Euphyllophytina) </Td> <Td> Agaricomycotina </Td> <Td> </Td> </Tr> <Tr> <Td> Class </Td> <Td> Insecta </Td> <Td> Mammalia </Td> <Td> Magnoliopsida (Equisetopsida) </Td> <Td> Agaricomycetes </Td> <Td> Gammaproteobacteria </Td> </Tr> <Tr> <Td> Subclass </Td> <Td> Pterygota </Td> <Td> Theria </Td> <Td> Rosidae (Magnoliidae) </Td> <Td> Agaricomycetidae </Td> <Td> </Td> </Tr> <Tr> <Td> Superorder </Td> <Td> </Td> <Td> Euarchontoglires </Td> <Td> Rosanae </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Order </Td> <Td> Diptera </Td> <Td> Primates </Td> <Td> Fabales </Td> <Td> Agaricales </Td> <Td> Enterobacteriales </Td> </Tr> <Tr> <Td> Suborder </Td> <Td> Brachycera </Td> <Td> Haplorrhini </Td> <Td> Fabineae </Td> <Td> Agaricineae </Td> <Td> </Td> </Tr> <Tr> <Td> Family </Td> <Td> Drosophilidae </Td> <Td> Hominidae </Td> <Td> Fabaceae </Td> <Td> Amanitaceae </Td> <Td> Enterobacteriaceae </Td> </Tr> <Tr> <Td> Subfamily </Td> <Td> Drosophilinae </Td> <Td> Homininae </Td> <Td> Faboideae </Td> <Td> Amanitoideae </Td> <Td> </Td> </Tr> <Tr> <Td> Genus </Td> <Td> Drosophila </Td> <Td> Homo </Td> <Td> Pisum </Td> <Td> Amanita </Td> <Td> Escherichia </Td> </Tr> <Tr> <Td> Species </Td> <Td> D. melanogaster </Td> <Td> H. sapiens </Td> <Td> P. sativum </Td> <Td> A. muscaria </Td> <Td> E. coli </Td> </Tr> </Table> <Tr> <Th> Rank </Th> <Th> Fruit fly </Th> <Th> Human </Th> <Th> Pea </Th> <Th> Fly agaric </Th> <Th> E. coli </Th> </Tr>

One of the five most general taxon or groupings
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