microevolution

microevolution definition - medical

mi·cro·ev·o·lu·tion (mīˌkrō-ĕvˌə-lo͞oˈshən, -ēˌvə-)

noun
Evolution resulting from a succession of relatively small genetic variations that often cause the formation of new subspecies.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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