Fig 2.

Typical time course of path length to developmental equilibrium (solid line) and of sensitivity to mutation (mean phenotypic distance of each individual in the population to phenotypes produced by single mutations of its genotype, broken line). The same founder individual evolves under strong stabilizing selection, σ = 0.1 (a), intermediate stabilizing selection, σ = 1 (b), and no stabilizing selection, σ ≈ ∞ (c and d). Populations are either random mating (a–c) or random mating without fertility selection (d) (see text).