Figure 8.

Snapshots of final simulation configurations, for simulations with no lag times, in the exponential area growth regime. In both panels, the lattice is 500 × 500 sites, with either (a) 100 seed cells or (b) 400 seed cells. Simulations without lag times produce a spread of winners and losers, suggesting that boundary competition is important. WI distributions are shown for simulations in the exponential area growth regime, without lag times, for two founder cell densities: (c) N = 100 seed cells, (d) N = 400 seed cells.