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Table 3 Result summaries for metapopulation simulations

From: The role of the ecological scaffold in the origin and maintenance of whole-group trait altruism in microbial populations

Scenario

\(\Delta g=100 \mathrm{gens}\)

\(50 \mathrm{gens}\)

\(25 \mathrm{gens}\)

\(1 \mathrm{gen}\)

Selective Migration

\({R}_{in}=50\)

\(0.95\pm 0.13\)

\(85/100\)

\(0.99\pm 0.01\)

\(100/100\)

\(0.99\pm 0.01\)

\(100/100\)

\(0.27\pm 0.10\)

\(0/100\)

Random Migration

\({R}_{in}=5\)

\(0.47\pm 0.45\)

28 \(/100\)

\(0.53\pm 0.48\)

\(46/100\)

\(0.55\pm 0.46\)

\(47/100\)

\(0.41\pm 0.48\)

\(37/100\)

Trait-Group Selection

\({R}_{in}=5\)

\(0.58\pm 0.50\)

\(58/100\)

\(0.61\pm 0.49\)

\(60/100\)

\(0.64\pm 0.48\)

\(63/100\)

\(0.47\pm 0.50\)

\(46/100\)

  1. In the first box \(0.95\pm 0.13\) gives the average proportion of A-type cells in the metapopulation after \(2\times {10}^{4}\) generations (\(\overline{\pi }\)) plus/minus one standard deviation taken over 100 simulations. The ratio 85/100 indicates that the A-type was fixed in the metapopulation or nearly so with \(\pi >0.95\) in 85 out of 100 trials