Figure 3. 'In silico hybridization' in the two-dimensional parameter space.

(a) Pattern dynamics in the linear model RD system. Each point (x, y) represents a parameter set (C=x, A=y) for the model equations. The labyrinthine pattern zone (outlined by the red border) lies between the white spot zone (white bordered) and the black spot zone (black bordered). Broken line segments joining the coloured squares (W1–2 and B1–2) denote 'in silico hybridization' between distinct parameter sets ('genotypes'). The midpoints of these segments (coloured circles; W3, B3 and L1–4) correspond to the 'hybrids'. The colour patterns calculated using the parameter sets of the indicated points are shown in the insets. (b–e) Pattern dynamics with various parameter sets and models. (b) Linear model, (c, d) the Gierer–Meinhardt model and (e) the Gray–Scott model.