Definition of microevolution in English:


Syllabification: mi·cro·ev·o·lu·tion
Pronunciation: /ˌmīkrō-evəˈlo͞oSHən, -ˌēvə-


  • Evolutionary change within a species or small group of organisms, especially over a short period.
    More example sentences
    • Resting eggs of planktonic organisms from datable sediment cores are increasingly used to reconstruct historical information on the abundance, size, genetic composition, and microevolution of planktonic organisms.
    • They already acknowledge microevolution - mutation and natural selection within a species.
    • The creation science folks accept microevolution but not macroevolution.



Pronunciation: /-ˈlo͞oSHəˌnerē/
More example sentences
  • First, genes expressed predominantly in males and the male germ line, and thus often subject to accelerated microevolutionary divergence, may be most likely to be deregulated in hybrids.
  • Thus, adaptation-oriented studies of characters have expanded from microevolutionary studies of function and fitness to include macroevolutionary studies of phylogenetic patterns.
  • To apply phylogenetic reasoning to questions about species status requires broadening of simple principles when microevolutionary processes may result in true differences among gene phylogenies.

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Word of the day skosh
Pronunciation: skōSH
a small amount; a little