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ia. a n = 1 mating 1.2 .-- co e.= 11 1 C O O 0.9 p1,2 = 0.75, p, = 1 Stably Does Not \ Invade Invades \ Unstable / Does Not Invade Bitable Stable 0.9 1 1.1 1 2 Colony efficiency, r v2 b n = 1 mating p,,, = 0.99. p, = 1 1.2 Colony efficiency, r1 1.1 0.9 - 10.8 Invades Unsta