Fitness variance and absorption in Markov chains

**Hora de inicio:** 11:00. **Hora de fin:** 12:00.

We consider an ideal promiscuity group of females, which implies that all males have the same average mating success. If females have concealed ovulation, then the males’ paternity chances are equal. We find that male-based monogamy in the course of evolution will be fixed in females’ promiscuity group when the stochastic Darwinian selection can be described by a Markov chain. We point out that in large populations the relative advantage (difference between average fitness of different strategies) determines primarily the end of evolution; in the case of neutrality (means are equal) the smallest variance guarantees fixation (absorption) advantage.