Figure 5.

Population fraction for two competing quasispecies as a function of genotypic mutation rate. The figure shows the population fraction obtained from equations 12 at the steady state as a function of genotypic mutation rate. Colored lines show the frontiers between the three phases in which alternate quasispecies dominate. In phase I and III, quasispecies A is selected, whereas in phase II, quasispecies B is selected. The amplification factors of quasispecies A are A_Am = 10 and A_Ak = 6. Those of quasispecies B are A_Bm = 8 and A_Bk = 5. The value of a_i, which determines the effect of the genotypic mutation rate on the phenotypic mutation rate are a_Am = 15, a_Ak = 0, a_Bm = 7, and a_Bk = 0.