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A Mixture of “Cheats” and “Co-Operators” Can Enable Maximal Group Benefit

Figure 1

Final population size (Log(titre, normalized to maximum observed titre)) after exhaustion of resources as a function of initial invertase producer frequency, in theory (lines) and practice (points (*); mean ± s.e.m.; n = 9).

Observed data fit a quadratic function better than a linear function (F2,3, = 41.3, p<0.01).

Figure 1

doi: https://doi.org/10.1371/journal.pbio.1000486.g001