Cladistic analysis of ribosomal RNAs--the phylogeny of eukaryotes with respect to the endosymbiotic theory.

A strict cladistic analysis of 5S and 16S rRNA secondary and primary structure confirms particular hypotheses concerning the phylogeny of eukaryotes: plastids of Euglena, green algae and land plants, and the cyanelle of Cyanophora share a specific character and are closely related to cyanobacteria of the Synechococcus-type. Angiosperm mitochondria share specific signatures with the alpha subdivision of rhodobacteria. Cyanophora is a member of the Euglenozoa, the Oomycetes are derived from a group of heterokont algae.