title: A parsimonay analysis of eukaryotic small subunit ribosomal RNA ("18 S") sequences.
abstract: Using the principles of Felsenstein's DNA parsimony analysis program (package PHYLIP 3.2), a program with the capacity to handle data sets of the magnitude of ss rRNA has been developed. With this program we applied an heuristic approach to 83 s rRNA sequences from the Antwerp data bank, compared along 4230 positions of their alignment. Branch and bound can also be applied to a smaller number of sequences. We suggest a heuristic tree for a large number of species might be more interesting than a proven minimal tree for a smaller set of species. Comparisons are also made with earlier studies using distance matrix methods; caution is urged for deciding on the evolutionary position of widely divergent groups, whatever the tree building technique used.
authors.affiliation: Départment de Botanique, Université de Liège, Belgium.
authors.forename: P
authors.initials: P
authors.lastname: Arrotin
authors.forename: V
authors.initials: V
authors.lastname: Demoulin
mesh_terms: D001483:Base Sequence; D003663:Decision Trees; D006217:Halobacterium / Q000235:genetics*; D006801:Humans; D010802:Phylogeny; D012337:RNA, Ribosomal, 18S / Q000032:analysis*; D012984:Software
chemical_list: D012337:RNA, Ribosomal, 18S