Evolvability is inevitable: increasing evolvability without the pressure to adapt.

Why evolvability appears to have increased over evolutionary time is an important unresolved biological question. Unlike most candidate explanations, this paper proposes that increasing evolvability can result without any pressure to adapt. The insight is that if evolvability is heritable, then an u...

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Autores principales:	Joel Lehman, Kenneth O Stanley
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bd3958faac2246a88ad08b070283ae7a
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spelling	oai:doaj.org-article:bd3958faac2246a88ad08b070283ae7a2021-11-18T07:47:59ZEvolvability is inevitable: increasing evolvability without the pressure to adapt.1932-620310.1371/journal.pone.0062186https://doaj.org/article/bd3958faac2246a88ad08b070283ae7a2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23637999/?tool=EBIhttps://doaj.org/toc/1932-6203Why evolvability appears to have increased over evolutionary time is an important unresolved biological question. Unlike most candidate explanations, this paper proposes that increasing evolvability can result without any pressure to adapt. The insight is that if evolvability is heritable, then an unbiased drifting process across genotypes can still create a distribution of phenotypes biased towards evolvability, because evolvable organisms diffuse more quickly through the space of possible phenotypes. Furthermore, because phenotypic divergence often correlates with founding niches, niche founders may on average be more evolvable, which through population growth provides a genotypic bias towards evolvability. Interestingly, the combination of these two mechanisms can lead to increasing evolvability without any pressure to out-compete other organisms, as demonstrated through experiments with a series of simulated models. Thus rather than from pressure to adapt, evolvability may inevitably result from any drift through genotypic space combined with evolution's passive tendency to accumulate niches.Joel LehmanKenneth O StanleyPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 4, p e62186 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Joel Lehman Kenneth O Stanley Evolvability is inevitable: increasing evolvability without the pressure to adapt.
description	Why evolvability appears to have increased over evolutionary time is an important unresolved biological question. Unlike most candidate explanations, this paper proposes that increasing evolvability can result without any pressure to adapt. The insight is that if evolvability is heritable, then an unbiased drifting process across genotypes can still create a distribution of phenotypes biased towards evolvability, because evolvable organisms diffuse more quickly through the space of possible phenotypes. Furthermore, because phenotypic divergence often correlates with founding niches, niche founders may on average be more evolvable, which through population growth provides a genotypic bias towards evolvability. Interestingly, the combination of these two mechanisms can lead to increasing evolvability without any pressure to out-compete other organisms, as demonstrated through experiments with a series of simulated models. Thus rather than from pressure to adapt, evolvability may inevitably result from any drift through genotypic space combined with evolution's passive tendency to accumulate niches.
format	article
author	Joel Lehman Kenneth O Stanley
author_facet	Joel Lehman Kenneth O Stanley
author_sort	Joel Lehman
title	Evolvability is inevitable: increasing evolvability without the pressure to adapt.
title_short	Evolvability is inevitable: increasing evolvability without the pressure to adapt.
title_full	Evolvability is inevitable: increasing evolvability without the pressure to adapt.
title_fullStr	Evolvability is inevitable: increasing evolvability without the pressure to adapt.
title_full_unstemmed	Evolvability is inevitable: increasing evolvability without the pressure to adapt.
title_sort	evolvability is inevitable: increasing evolvability without the pressure to adapt.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/bd3958faac2246a88ad08b070283ae7a
work_keys_str_mv	AT joellehman evolvabilityisinevitableincreasingevolvabilitywithoutthepressuretoadapt AT kennethostanley evolvabilityisinevitableincreasingevolvabilitywithoutthepressuretoadapt
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Evolvability is inevitable: increasing evolvability without the pressure to adapt.

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