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Phylogenetic affiliations of thaumarchaeal amoA (A) and 16S rRNA (B) gene sequences retrieved from Guelph WWTP RBCs. Both trees were inferred using the Maximum Likelihood method based on the Tamura–Nei model of sequence evolution. Bootstrap values are located above branches and are based on 500 replicates. Only bootstrap values greater than 50% are indicated on tree. The scale bars represent 5% and 2% nucleotide divergence for A and B respectively.
