Fig 4. Relative chimeric success in pairwise mixes.

The winning genotypes from Fig 2B are mixed in pairs and their relative number of spores measured after a single growth-starvation cycle. Genotypes are ordered according to the environment where they evolved in, with 0 corresponding to the fastest-recovery environment (i.e. λ_T = 10 hours) and 30 corresponding to the slowest-recovery one (i.e. λ_T = 10⁴ hours). To define chimeric success, we refer to one of the genotypes in the mix as reference genotype (x-axis) and to the other as mixed (genotype). Mixes in which the reference genotype produces more spores than its mixed partner are represented by red squares, whereas blue squares represent mixes in which the mixed genotype produces more spores. Mixes in which both genotypes produce the same amount of spores are represented by gray squares. A ranking of the genotypes according to their chimeric success is determined using the number of pair mixes in which a given genotype produces more spores than its partners; this depends on the initial amoebae relative to resource density. A) Low initial cell:resource density: 10³ cells and R₀ = 10⁸ resources, B) Intermediate initial cell: resource density: 10⁷ cells and R₀ = 10⁸ resources, C) High initial cell:resource density: 10¹⁰ cells and R₀ = 10⁸ resources.