# circular overlap

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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.

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• Magnetic circular dichroism — (MCD) is the differential absorption of left and right circularly polarized (LCP and RCP) light, induced in a sample by a strong magnetic field oriented parallel to the direction of light propagation. MCD measurements can detect transitions which …   Wikipedia

• Rassenkreis — n. [Ger. Rasse, race; Kreis, circle] Polytypic species; rheogameon; see circular overlap …   Dictionary of invertebrate zoology

• muscle — muscleless, adj. muscly, adj. /mus euhl/, n., v., muscled, muscling, adj. n. 1. a tissue composed of cells or fibers, the contraction of which produces movement in the body. 2. an organ, composed of muscle tissue, that contracts to produce a… …   Universalium

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