macromutation

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macromutation

[‚mak·rə·myü′tā·shən]

(genetics)

Any genetic change that leads to a pronounced phenotypic alteration.

Mentioned in ?

Mutationism

References in periodicals archive ?

Through a series of hypotheses and tests, geneticists revealed that early examples of laboratory-induced macromutation were, in fact, large-scale genetic damage caused by powerful doses of radiation and chemicals.

The evolutionary origins of genetic information

Keywords: Dynamic Multimodal Functions, Evolutionary Algorithms, Clustering Algorithms, Macromutation.

Evolutionary algorithms with clustering for dynamic fitness landscapes

* Recrudescence: This approach was proposed in [8] and it consists of macromutations. The approach increases both recombination and mutation probabilities of a portion of the population.

Evolutionary multiobjective optimization in non-stationary environments

Based on the lack of correlation of tobacco use with the soybean loci in our selected line, we concluded that there was no generalist macromutation. There is a possibility that tobacco is the exception and that, had we tested all other hosts, we might have found most of them to be correlated.

The genetic basis of differences in growth and behavior of specialist and generalist herbivore species: selection in hybrids of Heliothis virescens and Heliothis subflexa (lepidoptera)

Two mechanism of macromutation are incorporated to the algorithm to maintain genetic diversity in the population.

Invited paper: an evolutionary algorithm to track changes of optimum value locations in dynamic environments

The fatty acid profile difference between the subspecies is primarily caused by the E locus, a macromutation with a profound effect on erucic and dienoic acid concentrations (Knapp and Crane, 1998).

Genetic mapping of a macromutation and quantitative trait loci underlying fatty acid composition differences in meadowfoam oil

A macromutation in Tripsacum dacotyloides (Poaceae): Consequences for seed size, germination and seedling establishment.

The reproductive versatility of eastern gamagrass

It arose as a conceptual macromutation on November 24, 1859 -- "disgorged," as Mencken (1931) put it, "in one stupendous and appalling dose" -- and has undergone stasis or slow anagenesis ever since.