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Dynamical community structure of populations evolving on genotype networks

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URI: https://hdl.handle.net/10016/21463
ISSN: 0960-0779
DOI: 10.1016/j.chaos.2014.11.019
UXXI: AR/0000017089
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dydamical_CHSF_2015_ps.pdf (2.16 MB)
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2015-03
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Elsevier
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Neutral evolutionary dynamics of replicators occurs on large and heterogeneous networks of genotypes. These networks, formed by all genotypes that yield the same phenotype, have a complex architecture that conditions the molecular composition of populations and their movements on genome spaces. Here we consider as an example the case of populations evolving on RNA secondary structure neutral networks and study the community structure of the network revealed through dynamical properties of the population at equilibrium and during adaptive transients. We unveil a rich hierarchical community structure that, eventually, can be traced back to the non-trivial relationship between RNA secondary structure and sequence composition. We demonstrate that usual measures of modularity that only take into account the static, topological structure of networks, cannot identify the community structure disclosed by population dynamics.
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Chaos, Solitons & Fractals 72 (2015) March, pp. 99-106
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