Medical term:

locus



locus

 [lo´kus] (L.)
1. a place or site.
2. in genetics, the specific site of a gene on a chromosome.
locus ceru´leus a pigmented eminence in the superior angle of the floor of the fourth ventricle of the brain.
locus of control a belief regarding responsibility for actions. Individuals with an internal locus of control generally hold themselves responsible for actions and consequences, while those with an external locus of control tend to believe that they are not able to affect a personal outcome and that luck or destiny are responsible for their actions.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

lo·cus

, pl.

lo·ci

(lō'kŭs, lō'sī),
1. A place; usually, a specific site.
2. The position that a gene occupies on a chromosome.
3. The position of a point, as defined by the coordinates on a graph.
[L.]
Farlex Partner Medical Dictionary © Farlex 2012

locus

(lō′kəs)
n. pl. lo·ci (-sī′, -kē, -kī′)
1. A locality; a place.
2. The position that a given gene or genetic marker occupies on a chromosome.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

loci

Plural of locus. While this is generally pronounced in the UK as it is in the US, there exists a less common UK-specific pronunciation, which is usually used at an academic level.

Medspeak-UK: pronounced, low KAI
Medspeak-US: pronounced, low SAI
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

lo·cus

, pl. loci (lō'kŭs, -sī)
1. A place; usually, a specific site.
2. The position that a gene occupies on a chromosome.
3. The position of a point, as defined by the coordinates on a graph.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

locus

The position on a chromosome at which the gene for a particular characteristic resides. The plural is loci. A locus can contain any of the ALLELES of the gene.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

locus

(pl. loci) the position of a gene along a chromosome.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

lo·cus

, pl. loci (lōkŭs, -sī)
1. A place or site.
2. The position that a gene occupies on a chromosome.
3. The position of a point, as defined by graph coordinates.
Medical Dictionary for the Dental Professions © Farlex 2012


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