Genetic drift and selection in many-allele range expansions
Fig 5
Numerical solution of eq (5) describing how LI varies as a function of κ; analytical asymptotic approximations (eq 7) are overlaid.
If κ ≳ 1, inflation does not appreciably slow selective sweeps as LI approaches the linear selection length scale Ls. In contrast, if κ ≪ 1, the inflationary selection length scale LI will be many times larger than the linear selection length scale Ls, indicating that selection will be weak compared to inflation and diffusion (but will ultimately dominate at very large lengths expanded). The three black points correspond to measurements of the κij that govern the dynamics of our competing strains; N stands for the two selectively neutral strains (eCFP and eYFP), B for black, and R for mCherry (red). See the Predicting experimental results with simulation section for more details.