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mapping
Etymology: L, mappa, napkin the process of locating the relative position of genes on a chromosome through the analysis of genetic recombination. Distances between genes in a linkage group are expressed in map units or morgans. Also called chromosome mapping. mapping [map´ing] the creation on a flat surface of a representation of an area, showing the relative position of various features. cardiac mapping an electrophysiological procedure in which electric potentials recorded by electrodes placed directly on the heart are processed to give a two-dimensional display of the origin and path of an electrical impulse as it depolarizes the heart. genetic mapping determination of the location of genes on chromosomes. intraoperative lymphatic mapping sentinel node biopsy.
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