Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Bayesian phylogenetic tree of 49 species in the firmicutes. A phylogenetic tree was constructed with Bayesian inference on the basis of the gyrB sequence alignments of 49 species in the firmicutes. Numbers at the nodes represent posterior probabilities. The scale bar represents 0.1 substitutions per site. Letters A through G next to the species names represent the combinations of RNase H genes defined in Figure 1; B' indicates the presence of dsRHbd.
