Dia: Dimecres, 27 de setembre de 2017
Lloc: Aula S01, Facultat de Matemàtiques i Estadística, UPC.
A càrrec de: Tomás Lázaro, Universitat Politécnica de Catalunya
Títol: At the origins of life: small hypercycles with short-circuits
Resum: One of the most challenging open problems in science is to understand the origins of life in Earth primitive state and, in particular, concerning the first primitive replicating systems. Among the existent theories appearing in the last decades, the one conceived by Manfred Eigen and Peter Schuster (1971,1979) states that so-called hypercycles could play a crucial role since they could explain the growth in complexity overcoming the error threshold or critical mutation rate phenomenon. Hypercycles, i.e. nonlinear catalytic networks, allow an all-species coexistence and could support an information content larger than the one found for a quasispecies-based model. This theory received important criticisms due to its high sensitivity to the so-called parasites and short-circuits. While the impact of parasites has been widely investigated for well-mixed and spatial hypercycles, the effect of short-circuits in hypercycles remains poorly understood. In this talk we will present, briefly, a dynamical description of two small asymmetric hypercycles with short-circuits, tackling the question of growing complexity while keeping some stability.
This is a joint work with Ernest Fontich (UB), Toni Guillamon (UPC) and Josep Sardanyés (CRM).
Last updated: Monday, 16-Oct-2017 08:38:17 CEST