Figure 1From: A genome-wide survey of changes in protein evolutionary rates across four closely related species of Saccharomyces sensu stricto groupPhylogenetic relationships of the four species of the Saccharomyces sensu stricto group. The phylogenetic tree was constructed with the number of nucleotide substitutions, estimated by Kimura's two-parameter method, of concatenated nucleotide sequences of 2,610 orthologous genes (3,776,106 sites) by the neighbor-joining (NJ) method [22]. The names of branches defined in this study are shown above each branch. The number below the interior branch represents the bootstrap value (1000 replicates).Back to article page