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Phylogenetic trees of the alignments of the TPI1 genes (ORF) (A) and promoters (800 bp) (B) for a set of yeast species from the Saccharomycotina phylum. The coding regions are strongly conserved, whereas there is hardly any conservation among promoter regions. E. coli was used as an outgroup. Color indicates groups as defined in Dujon (2010).
