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Proc Natl Acad Sci U S A. 1996 Jan 9;93(1):397-401.

Smoothness within ruggedness: the role of neutrality in adaptation.

Author information

1
Los Alamos National Laboratory, Theoretical Biology and Biophysics, NM 87545, USA.

Abstract

RNA secondary structure folding algorithms predict the existence of connected networks of RNA sequences with identical structure. On such networks, evolving populations split into subpopulations, which diffuse independently in sequence space. This demands a distinction between two mutation thresholds: one at which genotypic information is lost and one at which phenotypic information is lost. In between, diffusion enables the search of vast areas in genotype space while still preserving the dominant phenotype. By this dynamic the success of phenotypic adaptation becomes much less sensitive to the initial conditions in genotype space.

PMID:
8552647
PMCID:
PMC40245
[Indexed for MEDLINE]
Free PMC Article

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