Navegando por Autor "Fehsenfeld, Kathia Mariane"
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Item Survival-extinction phase transition in a bit-string population with mutation.(2003) Fehsenfeld, Kathia Mariane; Dickman, Ronald; Bernardes, Américo TristãoA bit string model for the evolution of a population of haploid organisms , subject to competition , reproduction with mutation and selection is studied , using mean field theory an d Monte Carlo simulation s . We show that, depending on environmental flexibility an d genetic variability, the model exhibits a phase transition between extinction and survival. T h e mean field theory describes the infinite size limit, while simulations are used to study quasistationary properties.