Compared with their unicellular ancestors, clustering cells face locally increased cell densities. Thus, competition for local resources is increased. Furthermore, a mutation leading to clustering would likely hamper the mobility of organisms that rely on passive or active motion in the search for food resources. What factor, then, could have drive...
hat cooperation in the use of external energy resources may evolve in spatially structured environments. A large body of theory suggests that the evolution of cooperation is generally facilitated by spatial structure because of the increased frequency of interaction among relatives or clones in an asexual populatio
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