Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2001-01-29
Phys. Rev. E 64, 061908 (2001).
Physics
Condensed Matter
Soft Condensed Matter
RevTeX, 11 pages, multicolumn, including 12 figures
Scientific paper
10.1103/PhysRevE.64.061908
We find that the hypothesis made by Jan, Stauffer and Moseley [Theory in Biosc., 119, 166 (2000)] for the evolution of sex, namely a strategy devised to escape extinction due to too many deleterious mutations, is sufficient but not necessary for the successful evolution of a steady state population of sexual individuals within a finite population. Simply allowing for a finite probability for conversion to sex in each generation also gives rise to a stable sexual population, in the presence of an upper limit on the number of deleterious mutations per individual. For large values of this probability, we find a phase transition to an intermittent, multi-stable regime. On the other hand, in the limit of extremely slow drive, another transition takes place to a different steady state distribution, with fewer deleterious mutations within the asexual population.
Erzan Ayse
Sevim Volkan
Tuzel Erkan
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