Figure 3

Equilibrium population distribution with high lethality. Similar plots as in Fig. 2, but with high lethality of mutants. The figure displays the existence of the error-threshold, and the delocalization of the population from the fittest genotype. The blue dashed line is placed in Fig. 3(A,B) at the error rate for which d log y₀/d(1 - q) is locally minimum as depicted in (C). For all graphs, the parameters are as follows. ν = 50. f _d = 0.99^d. κ = 0.05; however, for each $\mathcal{G}$ _d , Round$\left(\kappa \left(\begin{array}{c}\nu \\ d\end{array}\right)\right)/\left(\begin{array}{c}\nu \\ d\end{array}\right)$ is used as the actual value of κ in Eq. (2), where Round(x) is the closest integer of x. (Thus, κ = 0 for $\mathcal{G}$ _ν , and then f _ν is set to zero to be consistent).