Proportionality between variances in gene expression induced by noise and mutation: consequence of evolutionary robustness.

Abstract excerpt

BACKGROUND: Characterization of robustness and plasticity of phenotypes is a basic issue in evolutionary and developmental biology. The robustness and plasticity are concerned with changeability of a biological system against external perturbations. The perturbations are either genetic, i.e., due to mutations in genes in the population, or epigenetic, i.e., due to noise during development or environmental...

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