map distance


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map dis·tance

(map dis'tănts),
The degree of separation of two loci on a linkage map, measured in morgans or centimorgans.
Farlex Partner Medical Dictionary © Farlex 2012

map distance

A genetics term of art for the space between two points of interest—typically between genes—which may be measured in centimorgans or kilobase pairs.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
References in periodicals archive ?
The estimation of map distance from recombination values.
Differences in marker order and map distances were noticed when the vicinity of QTL-M was compared with the region in the integrated map published by Song et al.
pretiosa complex can be illustrated by plotting [D.sub.N] against map distance (Table 4) for all pairwise population comparisons (Green 1983; D.A.
(2009), physical map distances were transformed into Morgan genetic map distances.
This Z value is used with a lookup table to extrapolate a map distance between two genes (Griffiths et al., 2000; Immer, 1930; Macguire, 2005).
Linkage map distance (cM) = 1/4 A- ln (1+2r)/(1-2r).
Plant SSR genotype Recombination Map SSR Plant Rps distance locus genotype AA AB BB P [+ or -] SE cM([dagger]) -- no -- -- Satt152 Rps1bRps1b 18 8 3 0.24 [+ or -] 0.11 rps1rps1 0 5 24 0.09 [+ or -] 0.07 Mean 0.16 [+ or -] 0.07 3.2 Satt530 Rps1bRps1b 20 5 4 0.22 [+ or -] 0.11 rps1rps1 2 2 21 0.12 [+ or -] 0.09 Mean 0.18 [+ or -] 0.07 1.6 Satt584 Rps1bRps1b 17 9 3 0.26 [+ or -] 0.12 rps1rps1 1 9 18 0.20 [+ or -] 0.11 Mean 0.23 [+ or -] 0.8 ([dagger]) Linkage Group N map distance between the indicated SSR and the SSR immediately above (from Cregan et al., 1999).
Reference to published map information including types and number of markers mapped, average map distance between markers, range of map interval size, and qualitative and quantitative trait loci mapped.
(1983) derived the following formula for the probability of at least one marker within a specified map distance of a major gene:
Data analysis using Mapmaker 3.0 (Lander et al., 1987) revealed that markers on linkage groups D2 and O were unlinked to wp, as the map distance between these markers and wp was greater than 50 cM.
Let us denote by [Delta](d) an inverse mapping function that converts a map distance d, given in morgans, to a recombination fraction r.
The map distance between a QTL and its flanking markers was 2.5 or 10 centiMorgans (cM).