Article
The Importance of Contact Zones for Distinguishing Interspecific from Intraspecific Geographic Variation.
Systematic biology - 16 Jun 2023
Chambers E Anne, Marshall Thomas L, Hillis David M
Abstract excerpt
With limited sampling, geographic variation within a single species can be difficult to distinguish from interspecific variation, confounding our ability to draw accurate species boundaries. We argue that thorough sampling and analysis of contact zones between putative taxa can determine if assortative mating or selection against hybrids exists (supporting the presence of two distinct species), or alternatively...
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