None | July 24, 14:00

Population Size Dependence of Evolutionary Paths in Bacteria


We consider the evolution of large but finite populations on arbitrary fitness landscapes. We describe the evolutionary process by a Markov, Moran process. We show that to O(1/N), the time-averaged fitness is lower for the finite population than it is for the infinite population. We also show that fluctuations in the number of individuals for a given genotype can be proportional to a power of the inverse of the mutation rate. Finally, we show that the probability for the system to take a given path through the fitness landscape can be non-monotonic in system size.


Prof. Jeong-Man Park, Catholic University of Korea
Seminarraum Theoretische Physik
Contact: not specified