microevolution

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mi·cro·ev·o·lu·tion

(mī'krō-ev'ŏ-lū'shŭn),
The evolution of bacteria and other microorganisms through mutations.

microevolution

(mī′krō-ĕv′ə-lo͞o′shən, -ē′və-)
n.
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.

microevolution

A term of art referring to evolution that occurs below the level of speciation, which corresponds to the shifts in allele frequencies occurring over time in a particular population, regardless of whether it is geographically or ecologically separated from another population.

microevolution

the small-scale changes resulting from genetic adaptation, that are usually expressed as changes within a species rather than the formation of a new species. see INDUSTRIAL MELANISM.
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