Figure 2
From: Fixation probabilities in network structured meta-populations
The difference between the fixation probability of a two-patch meta-population and a well-mixed population of the same size, \(N=10\). The two patch sizes are \(N_1=3\) and \( N_2=7 \). Lines show analytical results for low migration probabilities (Eq. 4) and migration probability \(\lambda =1\) (Eq. 19) as a function of fitness. Symbols show numerical results based on a transition matrix approach39. The numerical result and analytical result for low migration probability and high migration match perfectly. In the low migration regime the two-patch meta-population is a suppressor of selection, indicated by the fact that the symbols are never in the area with a white background. However, in the high migration regime (\( \lambda =1 \)), where simulations and analytical results again match, the two-patch meta-population is an amplifier of selection. The fixation probability for \( \lambda =1 \) is obtained analytically using the Martingale approach discussed by Monk41.
