Environmental Change, Phenotypic Plasticity, and Genetic Compensation
نویسندگان
چکیده
منابع مشابه
Environmental change, phenotypic plasticity, and genetic compensation.
When a species encounters novel environmental conditions, some phenotypic characters may develop differently than in the ancestral environment. Most environmental perturbations of development are likely to reduce fitness, and thus selection would usually be expected to favor genetic changes that restore the ancestral phenotype. I propose the term "genetic compensation" to refer to this form of ...
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Martin Stevens is Associate Professor of Sensory and Evolutionary Ecology at the University of Exeter. He did his PhD at Bristol University on bird vision and animal camouflage, and then undertook several fellowships at Cambridge University before moving to Exeter in 2013. His work has focussed on animal coloration, vision, and methods to quantify visual signals, especially image analyses. This...
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Introduction Why revisit a 50 year old debate? Genetic assimilation is a process whereby environmentally induced phenotypic variation becomes constitutively produced (i.e. no longer requires the environmental signal for expression). Although the origins of this concept can be traced [genetic assimilation] is an interesting but, I would judge, relatively minor outcome of the [synthetic] theory' ...
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In addition to considerable debate in the recent evolutionary literature about the limits of the Modern Synthesis of the 1930s and 1940s, there has also been theoretical and empirical interest in a variety of new and not so new concepts such as phenotypic plasticity, genetic assimilation and phenotypic accommodation. Here we consider examples of the arguments and counter-arguments that have sha...
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Two different, but related, evolutionary theories pertaining to phenotypic plasticity were proposed by James Mark Baldwin and Conrad Hal Waddington. Unfortunately, these theories are often confused with one another. Baldwin's notion of organic selection posits that plasticity influences whether an individual will survive in a new environment, thus dictating the course of future evolution. Herit...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 2005
ISSN: 0003-0147,1537-5323
DOI: 10.1086/432023