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. Author manuscript; available in PMC: 2014 Jan 2.
Published in final edited form as: Nat Commun. 2013;4:2085. doi: 10.1038/ncomms3085

Fig. 2. Skew affects individual fitness surfaces and adaptive landscapes.

Fig. 2

a)The individual fitness surface becomes more skewed with increasing ψ, ranging from a symmetric Gaussian distribution (dark blue) to a highly skewed distribution (red). We fix the mode of individual fitness surface at zero and strength (curvature) of stabilizing selection at -1 [equation(5)]. b)The mean population fitness depending on mean population phenotype (i.e., the adaptive landscape)based on the same individual fitness curves in (a) and assuming σ = 0.25. c)The mode of the adaptive landscape diverges from the optimum of the individual fitness surface in (a) which is set to zero with increasing skew and σ.