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. Author manuscript; available in PMC: 2016 Mar 21.
Published in final edited form as: J Theor Biol. 2015 Jan 28;369:85–94. doi: 10.1016/j.jtbi.2015.01.020

Figure 1.

Figure 1

The spatial population structure and functioning of our model is shown in a small example. Multiple cooperative individuals (yellow) are in contact with multiple defecting individuals (black). The fitness consequences of all pairwise interactions of the eight numbered individuals are given. In this case, individual #2 (underlined) has the highest fitness payoff and would therefore be the most likely to fill the central empty node (white) with a biological offspring that pursues a cooperative strategy.