Figure 3. Unrooted phylogenetic tree based on urease alpha subunit (130aa) of sponge X. testudinaria using Neighbour-joining method.
The scale bar represents 0.05 substitutions per amino acids position. Bootstrap values (1,000 replicates) higher than 50% are shown. ○mark and ureC-D mean the OTU in genomic DNA library, and •mark and ureC-R mean the OTU in cDNA library. The number inside the parenthesis means the number of sequences within each OTU.