Population genetics in compressible flows

Feb 25, 2011, 2:15 PM
45m
FB53 (AlbaNova Main Building)

FB53

AlbaNova Main Building

Speaker

Simone Pigolotti (Niels Bohr Institute)

Description

Population genetics studies how mutant forms of genes spread in space and can eventually take over a population. The physical mechanisms underlying this process can be very different in the ocean, where flows can radically alter the chances of genes being fixated. I will present a new model that generalizes basic models of population genetics in the presence of a fluid flow. I will show that even the presence of a weak compressible flow has a dramatic effect on the fixation times and probabilities. I will then discuss the possible consequences of these findings for understanding the behavior of plankton populations in the oceans.

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