The distributions of growth rates in a novel environment for evolved networks and random networks.
100 evolved networks obtained after 100 generations with EFR (; see Fig. 2) and 100 random networks were used for the calculations. For each network, the growth rates were calculated using 50 randomly chosen target expression patterns that were not used for the evolutionary simulations. For all simulations in this figure, is set to 1 and EFR is incorporated in the expression dynamics. The difference in the growth rates was statistically significant (; determined by U-test).