circular overlap

circular overlap
The phenomena in which a chain of contiguous and intergrading populations of one species curves back until the terminal links overlap geographically and are then found to be reproductively isolated from each other, and as such, behave as if they belong to separate species; a rassenkreis.

Online Dictionary of Invertebrate Zoology. . 2005.

Игры ⚽ Поможем решить контрольную работу

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