linkage map


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link·age map

an abstract mathematical representation of genetic loci that conserves order of loci, which are spaced in such a way that the distances are algebraically additive; conventionally, a map is scaled so that as distances between loci become smaller the ratio of the map distance to the value of the recombination fraction approaches 1 and independently assorting loci are infinitely far apart.

linkage map

linkage map

A CHROMOSOME map showing the relative positions of known genes.

linkage map

see CHROMOSOME MAP.

linkage

1. the connection between different atoms in a chemical compound, or the symbol representing it in structural formulae. See also bond.
2. in genetics, the association of genes having located on the same chromosome, which results in the tendency of a group of such nonallelic genes to be associated in inheritance (linkage disequilibrium). Called also syntenic group.

disequilibrium linkage
the inheritance of two alleles together at a higher than expected frequency.
linkage map
see genetic map.
References in periodicals archive ?
A preliminary genetic linkage map was constructed for Phalaenopsis by AFLP markers, a species that was relatively lacking the genetic information.
In the present study, the cause of the uneven marker distribution in the linkage map may be related to the great variation of restriction sites and existence of repeat sequences in some but not all genomic regions (Alonso-Blanco et al.
Newburg (1987) Mapmaker; an interactive computer program for constructing genetic linkage maps of experimental and natural populations.
0: Windows software for the graphical presentation of the linkage maps and QTL.
A genetic linkage map of a cichlid fish, the tilapia (Oreochromis niloticus).
A total of 44 unambiguous polymorphic (easy to score allele) SSR primers were used to construct a linkage map.
A linkage map was built based on the recombination rate determined for 10 microsatellite markers on SSC4.
We projected a reported QTL on the soybean composite linkage map (Song et al.
The Aedes aegypti karyotype and linkage map have traditionally been the standard in correlating linkage groups with chromosomes in other Aedes species (Munstermann 1981, 1990a).
Researchers have successfully mapped the relative positions of more than 400 genetic "markers' on all 46 human chromosomes, completing the first genetic linkage map of the entire human genome.