Phylogenetic tree of the Candida clade of species, together with the related hemiascomycete S. cerevisiae. The six species sequenced in the Butler et al. study  were C. albicans, C. tropicalis, C. parapsilosis, L. elongisporus, C. guilliermondii, and C. lusitaniae. These sequences were compared to those of non-pathogenic yeasts, including D. hansenii and species from the S. cerevisiae clade. Note that L. elongisporus has now been isolated from bloodstream infections (a rare pathogen), and that C. albicans undergoes efficient mating but a conventional meiosis has not been identified (parasexual reproduction). Figure adapted from the web site of the Broad Institute. Dip, diploid genome; Hap, haploid genome.