title: A brief note concerning archaebacterial phylogeny.
abstract: Critical analysis of the recently proposed alternative to the normal archaebacterial tree, the new eocyte tree, shows that the latter's central topology, in which the eubacteria branch from an entirely different section of the unrooted archaebacterial tree than the eukaryotes, is consistent with an artifact. The effects of the alignment used and the particular composition of the sequence quartets analyzed to infer this tree are discussed in detail.
authors.affiliation: Department of Microbiology, University of Illinois, Urbana 61801.
authors.forename: G J
authors.initials: GJ
authors.lastname: Olsen
authors.forename: C R
authors.initials: CR
authors.lastname: Woese
mesh_terms: D001105:Archaea / Q000145:classification / Q000235:genetics*; D001419:Bacteria / Q000235:genetics*; D005051:Eubacterium / Q000145:classification / Q000235:genetics; D005057:Eukaryotic Cells; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D012336:RNA, Ribosomal, 16S