Transient amplifiers of selection and reducers of fixation for death-Birth updating on graphs.

ABSTRACT: The spatial structure of an evolving population affects the balance of natural selection versus genetic drift. Some structures amplify selection, increasing the role that fitness differences play in determining which mutations become fixed. Other structures suppress selection, reducing the effect of fitness differences and increasing the role of random chance. This phenomenon can be modeled by representing spatial structure as a graph, with individuals occupying vertices. Births and deaths occur stochastically, according to a specified update rule. We study death-Birth updating: An individual is chosen to die and then its neighbors compete to reproduce into the vacant spot. Previous numerical experiments suggested that amplifiers of selection for this process are either rare or nonexistent

SUBMITTER: Allen B 

PROVIDER: S-EPMC6968840 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature