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Microevolution is the change in allele frequencies that occurs over time within a population. [1] This change is due to four different processes: mutation , selection ( natural and artificial ), gene flow and genetic drift .
Yuri Aleksandrovich Filipchenko, sometimes Philipchenko (Russian: Юрий Александрович Филипченко; 1882 — 1930) was a Russian entomologist who coined the terms microevolution and macroevolution, as well as the mentor of geneticist Theodosius Dobzhansky. [1]
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Macroevolution refers to evolution that occurs at or above the level of species, in particular speciation and extinction, whereas microevolution refers to smaller evolutionary changes within a species or population, in particular shifts in allele frequency and adaptation. [135] Macroevolution is the outcome of long periods of microevolution. [136]
Macroevolution gets 73 hits, microevolution gets 175. I've also seen "macroevolution" used in a grant proposal to describe the evolution of a particular genus. I think it is safe to say that any evolution researcher is familiar with these terms and many/most would be comfortable using it in purely descriptive terms.
This use of the term micro-evolution is indeed misuse (as in the verb meaning "use wrongly") so it is rightly labeled as such in the article. The truth can't be afraid, by the way, nor can it be happy, sad or have any other emotion. Terper 18:55, 26 November 2009 (UTC) I suppose experience can't be a teacher.
In other words, microevolution is the scale of evolution that is limited to intraspecific (within-species) variation, while macroevolution extends to interspecific (between-species) variation. [4] The evolution of new species ( speciation ) is an example of macroevolution.
It also related the broad-scale macroevolution seen by palaeontologists to the small-scale microevolution of local populations. The synthesis was defined differently by its founders, with Ernst Mayr in 1959, G. Ledyard Stebbins in 1966, and Theodosius Dobzhansky in 1974 offering differing basic postulates, though they all include natural ...