The expected and recovered balanced topologies. Figure 4A illustrates the eight taxa balanced topology as an unrooted cladogram. Figure 4B is the Euclidean NJ tree, when taxon A is the reference, as an unrooted cladogram and is two steps away according to the symmetric distance from the desired topology in Figure 4A. It was evolved at 7.5% average nucleotide substitutions.
Gilbert et al. BMC Genomics 2011 12:456 doi:10.1186/1471-2164-12-456