Phenotypic plasticity and evolution by genetic assimilation
نویسندگان
چکیده
منابع مشابه
Phenotypic plasticity and evolution by genetic assimilation.
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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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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Many organisms can acclimate to new environments through phenotypic plasticity, a complex trait that can be heritable, subject to selection, and evolve. However, the rate and genetic basis of plasticity evolution remain largely unknown. We experimentally evolved outbred populations of the nematode Caenorhabditis remanei under an acute heat shock during early larval development. When raised in a...
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Natural or artificial selection that favors higher values of a particular trait within a given population should engender an evolutionary response that increases the mean value of the trait. For this prediction to hold, the phenotypic variance of the trait must be caused in part by additive effects of alleles segregating in the population, and also the trait must not be too strongly genetically...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2006
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.02070