Figure 2. Gaussian JDFEs and the resulting fitness trajectories.

(A–E) Contour lines for five Gaussian JDFEs. ‘‘x’’ marks the mean. For all distributions, the standard deviation is 0.1 in both home- and non-home environments. The correlation coefficient ρ is shown in each panel. (F–J) Home and non-home fitness trajectories for the JDFEs shown in the corresponding panels above. Thick lines show the mean, ribbons show ±1 standard deviation estimated from 100 replicate simulations. Population size $N={10}^4$, mutation rate $U={10}^{-4}$ ($U_b=4.6\times {10}^{-5}$).

Figure 2—figure supplement 1. JDFEs with equal probability weights in the first and fourth quadrants and the resulting fitness trajectories.

See Materials and methods for details.