Fig. 1
From: Neutral genomic signatures of host-parasite coevolution
A simple bottleneck model with an initial population size of 1000 (a) and 10000 (c) is considered, where the population size drops instantaneously to one tenth of its original size at time zero for 5 generations before recovering again to its original size. Original time in generations is opposed to time scaled in units of the initial population size on the x-axes and the population size changes are given in absolute and relative numbers on the y-axes. The absolute number of singletons scaled by θ,f20,1(t)/θ, are illustrated for the respective cases in (b) and (d). The bottleneck is more apparent in (b) than in (d), where the changes of f20,1(t)/θ stay within a five percent margin. This is due to slower rescaled time in the first scenario (a), where the population size drop affects polymorphisms prolongedly