Definitionn. the occurrence of related organisms in separate geographical areas with no overlap
Last update: October 25, 2015
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Different degrees of differentiation thus obtain between the subspecies _vagrans_ as here defined and the surrounding subspecies of _Sorex vagrans_ to wit: complete intergradation and allopatry in Utah with _S. [Please select]
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The four are here afforded species rank since morphological similarity and allopatry are not sufficient grounds for the assumption of genetic exchange. [Please select]
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