We investigate a population-genetic model in a specific fluctuating environment . We numerically show that a counter-intuitive behavior occurs where fitness of the system decreases as selection pressure increases from zero. This phenomenon is understood by analogy with absolute negative mobility in particle flow. A phenomenological explanation about the direction of evolution is also provided.
We investigate a population-genetic model with a temporally-fluctuating sawtooth fitness landscape . We numerically show that a counter-intuitive behavior occurs where the rate of evolution of the system decreases as selection pressure increases from zero. This phenomenon is understood by analogy with absolute negative mobility in particle flow. A phenomenological explanation about the direction of evolution is also provided.
R
in a specific fluctuating environment
with a temporally-fluctuating sawtooth fitness landscape
R
fitness
the rate of evolution