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Emergence of Evolutionary Driving Forces in Dense Cellular Populations

Referent: Prof. Dr. Oskar Hallatschek | Moderation: Prof. Dr. Dieter Braun (LMU)

03.07.2018 um 12:15 Uhr

Evolutionary dynamics are controlled by a number of driving forces, such as natural selection, random genetic drift and dispersal. While these forces are usually modeled at the population level, it is often unclear how they emerge from the stochastic and deterministic behavior of individual cells. In his talk Oskar Hallatschek discusses how even the most basic mechanical interactions between neighboring cells can couple evolutionary outcomes of otherwise unrelated individuals, thereby weakening natural selection and enhancing random genetic drift. Using microbial examples of varying degrees of complexity, he highlights a feedback loop between ecological and evolutionary dynamics, which is particularly pronounced in pattern-forming systems. Understanding this feedback loop could be key to predicting and potentially steering evolutionary processes, and requires extending the systems biology approach from the cellular to the population scale.

Oskar Hallatschek ist Professor für Physik an der University of California in Berkeley und derzeit Visiting Fellow am CAS und derzeit im Rahmen der CAS-Research Group von Dieter Braun "Recreating the Origin of Life" als Visiting Fellow am CAS.

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