Fig. 6.

When we plot the measured fixation probabilities against $s$ times the larger effective population size of our two approximations, Eqs. 13 and 15, our data collapse to a master curve. The agreement with our shell model simulations suggests that we have identified how the fixation varies with $A_0,\mu ,$ and $s$ for this parameter regime. Error bars associated with 2,000 independent realizations are shown. $N_{tot}\approx N_0$ for all data points shown, avoiding the crossover to localized behavior. These parameters ensure that approximate spatial uniformity is maintained. (Inset) When plotted as a function of the quasi-neutral theory only, Eq. 13, we see a departure from the theory at high values of $s$, which motivates the high $s$ approximation given by Eq. 15.