Optimal Mutation Rates in Dynamic Environments

Details Optimal Mutation Rates in Dynamic Environments Optimal Mutation Rates in Dynamic Environments

2000-04-19

arxiv.org/abs/physics/0004042v1

Physics

Biological Physics

Scientific paper

In this paper we study the evolution of the mutation rate for simple organisms in dynamic environments. A model with multiple fitness coding loci tracking a moving fitness peak is developed and an analytical expression for the optimal mutation rate is derived. Surprisingly it turns out that the optimal mutation rate per genome is approximately independent of genome length, something that also has been observed in nature. Simulations confirm the theoretical predictions. We also suggest an explanation for the difference in mutation frequency between RNA and DNA based organisms.

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