Figure 5.

Increasing the initial mutant population size delays extinction and slightly expedites fixation. The figure layout is analogous to figure 4. As we increase S₀, we increase the distance between S₀ and b, and decrease the distance between S₀ and a. Consequently, ${\psi }_{C_T|\mathit{b}}(\tau )$ condenses about the origin, and ${\psi }_{C_T|\mathit{a}}(\tau )$ expands from the origin. Equivalently, the moments of C_T|b and C_T|a increase and decrease, respectively. When S₀ is small compared with the population size, we see that ${\psi }_{C_T|\mathit{b}}(\tau )$ is more sensitive to changes in S₀ than ${\psi }_{C_T|\mathit{a}}(\tau )$. In these plots, r = 2, A = 3 and B = 10.