linkage group


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linkage group

n.
A pair or set of genes on a chromosome that tend to be transmitted together.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Noun1.linkage group - any pair of genes that tend to be transmitted together; "the genes of Drosophila fall into four linkage groups"
cistron, gene, factor - (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity; "genes were formerly called factors"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
Near isogenic lines confirm a soybean cyst nematode resistance gene from PI 88788 on linkage group J.
Among model organisms, genetic mapping is most well established in the mouse, having begun in 1915 with the discovery of the first linkage group (16).
Within this group, each diagnostic allozyme is expected to mark the taxonomic origin of a linkage group. Assuming that the allozyme markers are not linked, these linkage groups are expected to son independently of one another, and it is possible to determine whether an appreciable portion of the physiological variation cosegregates with any of the genetic markers.
Under the GROUP command at the minimum LOD = 3 and the maximum distance of 25 cM between 2 loci, markers were organized into linkage groups. Successive COMPARE, ORDER, and MAP commands were used to order the markers preliminarily in each linkage group with fewer than 9 markers.
Linkage group conservation has been a topic of considerable evolutionary interest since Muller (1940) first suggested that linkage elements corresponding to chromosome arms were conserved in Drosophila evolution.
CRIMAP analysis using a limits-of-detection (LOD) score of 5.0 placed ShIL1-21 in linkage group 14 of Shrimp Map whereas ShIL1-28 remained unlinked.
The terminal-most or near terminal-most SSR or INDEL marker loci from each linkage group were selected for genotyping in addition to SSR or INDEL marker loci spaced as evenly as possible throughout each linkage group.
The multiple comparisons problem inherent in this many tests for epistasis was addressed by first calculating the effective number of independent tests for each linkage group (Cheverud 2000, Cheverud 2001).
Three other similarly sized populations of unselected RILs were utilized from the crosses 'Peking' x 'Hamilton' (Nickell et al., 1990), 'Pershing' (Anand and Shannon, 1985) x "Hamilton', and 'Peking' x "Essex" to validate our analysis of the SSR markers on linkage group C2.