Evolution of germ and soma in colonies with identical cells: A linear trade-off, a resource constraint and different ‘importances’ of viability and fecundity.

<p>Here we assume that we have three groups of cells within the colony such that all cells from each group have the same level of fecundity and the same level of viability (i.e., we have three ‘aggregate’ cells in the colony). In panel (a), Case 1 is illustrated. In panel (b), Case 3 is illustrated. With a linear trade-off there is no Case 2 in the model (i.e., it means that the set of parameters that lead to Case 2 in the space of all possible parameters is a set of measure zero). Optimal strategies of the colony are colored in red. With a linear trade-off, identical colony behaves as a single cell. In all panels, <i>α</i> = 1, <i>β</i> = 2, <i>k</i>₁ = 1, <i>C</i> = 4 and <i>φ =</i> 1-<i>b</i>. In panel (a), <i>k</i>₂ <i>=</i> 1. In panel (b), <i>k</i>₂ <i>=</i> 2.