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 (mī′krō-ĕv′ə-lo͞o′shən, -ē′və-)
Small-scale evolution consisting of genetic changes occurring usually within a single species and over a shorter period of time than in macroevolution.

mi′cro·ev′o·lu′tion·ar′y adj.


1. (Biology) evolutionary change over a short period
2. (Biology) evolutionary change on a small scale


(ˌmaɪ kroʊˌɛv əˈlu ʃən; esp. Brit. -ˌi və-)

evolutionary change involving the gradual accumulation of mutations leading to new varieties within a species.
mi`cro•ev`o•lu′tion•ar′y, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.microevolution - evolution resulting from small specific genetic changes that can lead to a new subspecies
organic evolution, phylogenesis, phylogeny, evolution - (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms
References in periodicals archive ?
Studies are being carried out on the herb's relationship to other Pedicularis to better understand the micro-evolution in the species.
Given that scientists have observed micro-evolution of this sort in nonhuman species within the lifetimes of individual researchers, and given the ample evidence from animal husbandry that both physical and behavioral traits can be altered in relatively short spans of time, these human evolutionary discoveries should not be surprising.
He took a swipe at Mr Cook to vent the frustration: ""I have a feeling - and this is a funny thing that happens with people who are very buttoned down - that (Cook) probably thinks he's innovating, when in fact it's just micro-evolution," said Mr Bushnell in the interview.

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