Kavita Jain

The paper studies how population size fluctuations affect mutant fixation probability over time in a conditional Wright-Fisher process.

The paper analyzes evolutionary dynamics under fluctuating population sizes, showing that an effective population size cannot always exist and presents exact results for fixation probabilities and times in a stochastic switching model.

This study derives the site frequency spectrum (SFS) during selective sweeps in non-recombining populations, showing power law behaviors and their dependence on selection strength and clonal interference.