Vicariance
noun, Biology.
1.
the geographical separation and isolation of a subpopulation, resulting in the original population’s differentiation as a new variety or species.
vicariance
(vī-kâr’ē-əns, vĭ-)
The separation or division of a group of organisms by a geographic barrier, such as a mountain or a body of water, resulting in differentiation of the original group into new varieties or species. See also speciation.
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