Figure 1

Likelihood mapping analysis of K1 gene (VR1 and VR2 regions) sequences of HHV-8. Each dot represents the likelihoods of the three possible unrooted trees for a set of four sequences (quartets) selected randomly from the data set: dots close to the corners or the sides represent, respectively, tree-like, or network-like phylogenetic signal in the data. The central area of the likelihood map, represents star-like signal (phylogenetic noise). Panel A and B represent the first and second data set, respectively.