RNA Shape Space Topology

Author:

Cupal Jan1,Kopp Stephan12,Stadler Peter F.13

Affiliation:

1. Institut für Theoretische Chemie, Universität Wien Währingerstraße 17, A-1090 Wien, Austria

2. Los Alamos National Laboratory, TSA/DO-SA Los Alamos, NM 87545-1663, USA Mailstop: TA-0, SM-1237, MS M997

3. The Santa Fe Institute 1399 Hyde Park Road, Santa Fe, NM 87501, USA

Abstract

The distinction between continuous and discontinuous transitions is a long-standing problem in the theory of evolution. Because continuity is a topological property, we present a formalism that treats the space of phenotypes as a (finite) topological space, with a topology that is derived from the probabilities with which one phenotype is accessible from another through changes at the genotypic level. The shape space of RNA secondary structures is used to illustrate this approach. We show that evolutionary trajectories are continuous if and only if they follow connected paths in phenotype space.

Publisher

MIT Press - Journals

Subject

Artificial Intelligence,General Biochemistry, Genetics and Molecular Biology

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