Estimation of phylogenetic distances among ascomycetous yeasts from partial sequencing of ribosomal RNA

Extent of taxonomic resolution obtained from nuclear DNA complementarity and ribosomal RNA sequencing is discussed. The phylogenetic relationships of Schizosaccharomyces pombe, Pichia stipitis, Pachysolen tannophilus, and Saccharomyces cerevisiae are compared from partial sequences of 18S and 26S ribosomal RNA.