Does Good Mutation Help You Live Longer?

Details Does Good Mutation Help You Live Longer? Does Good Mutation Help You Live Longer?

1999-01-25

arxiv.org/abs/cond-mat/9901272v2

Phys. Rev. Lett. 83, 1251-1254 (1999)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 2 figures, RevTeX revised version, to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.83.1251

We study the dynamics of an age-structured population in which the life expectancy of an offspring may be mutated with respect to that of its parent. When advantageous mutation is favored, the average fitness of the population grows linearly with time $t$, while in the opposite case the average fitness is constant. For no mutational bias, the average fitness grows as t^{2/3}. The average age of the population remains finite in all cases and paradoxically is a decreasing function of the overall population fitness.

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