Figure 2
From: PhyloScan: identification of transcription factor binding sites using cross-species evidence
Phylogenetic Tree of Fourteen Prokaryotes. This tree of fourteen prokaryotes specifies the phylogenetic relationship of the species in our simulated sequence data. The tree is realistic, but approximate. The branch lengths represent the number of substitutions (including subsequent substitutions at a given sequence position) expected for each 10,000 nucleotides not subject to selection pressures.