Figure 4
From: Distribution of fitness effects of mutations obtained from a simple genetic regulatory network model
DFE of beneficial mutations can be represented by exponential distribution for all three initial fitness. System is simulated for (A) 0.01fmax, (B) 0.1fmax, and (C) 0.5fmax with 100 different parameter sets (80 parameter sets for 0.5fmax). Frequency distribution of beneficial mutations associated with all three fitness levels can be represented by exponential distribution. The fitting parameter (λ) and R-square associated with each parameter sets are plotted. We see that, when system is at low fitness level (0.01fmax and 0.1fmax) the exponential distribution can fit the data accurately (high R-square), in case of high fitness (0.5fmax) however, exponential distributions do not fit as accurately (low R-square).
