genetic 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.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

genetic mapping

1. The process of determining the location of the genes for various characteristics and diseases in the chromosomes.

2. The determination of the sequence of bases in the chromosomes corresponding to the genes. The human GENOME mapping project is now under way and is hoped to be completed by the beginning of the 21st Century.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005