The notion of potentiality in Mayr's definition of "potentially interbreeding" species applies mainly to populations of organisms that are

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Mayr's definition of "potentially interbreeding" species is based on the potential for two populations to interbreed and produce viable offspring when they come into contact. This applies mainly to populations that are allopatric, meaning geographically separated, because they have the potential to come into contact if their ranges overlap or if one population expands into the range of the other. Populations that are sympatric or in hybrid zones are already in contact and may have interbred, so the question of potentiality is not as relevant. Asexual organisms do not reproduce sexually, so the concept of interbreeding does not apply. Adaptive radiation refers to the diversification of a single ancestral species into multiple descendant species, so it is not directly related to the idea of potential interbreeding.

The Notion of Potentiality in Mayr's Definition of "Potentially Interbreeding