Fig. 7

Rate of adaptation v _ij as a function of x _i and x _j for three different models. a Eq. 3 from main text. b Eq. 7 from Weissman & Barton [79], c Eq.12b from Neher et al. [78]. We observe that (b) is very close to a linear scaling of (a) and, although (c) shows slight qualitative differences in the shape of the function, it maintains the essential qualitative characteristic. In all cases, the rate of evolutionary change in an interaction coefficient increases with the product of x _i and x _j . (As per our simulation experiments: k _ie =10,m _i =0.5,g=0.1,μ=1.0×10⁻⁵. For case (b), the map length, R=1. For case (c), the out-crossing rate, r=0.01)