Dictionary of Human Evolution and Biology

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1. inward, or medial, turning of the plantar surface of the foot. Verb: to invert.

Cf. eversion.See pronation and supination.

2. event, or the product of such an event, that results in a reversed order of a segment of a chromosome and also the order of the genes in its linkage group. Inversions are often detectable by examining the banding patterns of chromosomes, and are one of the most common modes of chromosome evolution in mammals.

See pericentric inversion and paracentric inversion.

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From "Dictionary of Nursing and Individual Health Care"