Figure 2.

Trajectories of the median (red thick line) and the mean (blue dashed) of allele frequency when $\alpha =1.5$ and $N={10}^8$. Inset: The trajectory (red points) of $|\Delta X^{\text{med}}|=X(0)-X^{\text{med}}(\tau )$ is shown in log–log plot. The median agrees well with the expectation from the scaling argument $\Delta X^{\text{med}}\sim -{\tau }^{\frac{1}{\alpha }}$ (black solid line).