Figure 6
Estimation of the most parsimonious scenario of evolution in a multifurcated tree. (a) At internal nodes having more than two children, we insert two tentative nodes, Ï„iand Ï„n. We assume that children of Ï„i(Ï„n) always (do not) inherit the target gene from Ï„i(Ï„n). (b) Description of our modification for multifurcated branching (see Materials and methods). (c) It is assumed that the gene is lost in Ï„nwhen the gene is inherited from v. (d) It is assumed that the gene is gained in Ï„iwhen the gene is not inherited from v.