Visualization of the posterior probability of rooting of the EFL tree. The topology represents the unrooted topology of EFL genes. Branch width is proportional to the posterior probability that the outgroup, consisting of archaebacterial EF-1α, EF-1α, eRF3 and HBS1 sequences, attaches to the ingroup tree at that point. Numbers at branches represent the total posterior probability that the root is situated along the branch in question.
Cocquyt et al. BMC Evolutionary Biology 2009 9:39 doi:10.1186/1471-2148-9-39