Trees of Life

Opinions differ, so:

http://www.peripatus.gen.nz/Biology/cgmrRNA.gif
A rRNA (16S) cladogram showing presumed phylogenetic realtionships between the three superkingdoms: bacteria (yellow), Archaea (archaeans, green) and Eucarya (eukaryotes, blue). (After Schopf 1999, fig. 4.2.) However, eukaryote genome analysis is not necessarily straight forward; “it has been established that the eukaryotic genome is a chimaera where genes of ancient eukaryotic ancestry coexist with genes more recently acquired from bacterial endosymbionts” (Brown 2002).

Brown, James R. 2002 (in press): Universal Tree of Life. In Encyclopedia of Life Sciences. Nature Publishing Group, Macmillan.