Figure 2From: The impact of population size on the evolution of asexual microbes on smooth versus rugged fitness landscapesSchematic of the computational model. Each clone is characterized by its fitness value, and has a neighborhood of 1-step mutants of size L. When a mutation occurs, a random mutant from this neighborhood is selected. For instance in the figure, the initial clone with fitness f0 gives rise to the mutant . This mutant has access to another set of L mutants, etc. The fitness of each mutant is f0 + s i , where the s i are drawn from an exponential distribution. This can lead to mutants reaching fitness peaks. If for instance all have lower fitness than the mutant , this mutant is considered to have reached a local peak. In the figure, three out of five fitness values of the 1-step neighborhood change as the clone mutates from f0 to (dark gray blocks). This corresponds to a value of r = 0.6 for the parameter which defines the amount of ruggedness of the fitness landscape (see text).Back to article page