Adaptive noise

Mark Viney, Sarah E Reece

Research output: Contribution to journalArticle (Academic Journal)peer-review

46 Citations (Scopus)

Abstract

In biology, noise implies error and disorder and is therefore something which organisms may seek to minimize and mitigate against. We argue that such noise can be adaptive. Recent studies have shown that gene expression can be noisy, noise can be genetically controlled, genes and gene networks vary in how noisy they are and noise generates phenotypic differences among genetically identical cells. Such phenotypic differences can have fitness benefits, suggesting that evolution can shape noise and that noise may be adaptive. For example, gene networks can generate bistable states resulting in phenotypic diversity and switching among individual cells of a genotype, which may be a bet hedging strategy. Here, we review the sources of noise in gene expression, the extent to which noise in biological systems may be adaptive and suggest that applying evolutionary rigour to the study of noise is necessary to fully understand organismal phenotypes.

Original languageEnglish
Pages (from-to)20131104
JournalProceedings of the Royal Society B: Biological Sciences
Volume280
Issue number1767
DOIs
Publication statusPublished - 22 Sep 2013

Keywords

  • Biological Evolution
  • Gene Expression
  • Gene Regulatory Networks
  • Genetic Fitness
  • Models, Genetic
  • Phenotype

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