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linkage group

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
linkage group
n.
A pair or set of genes on a chromosome that tend to be inherited together.

linkage group,
a group of genes that tend to be inherited as a unit because they are located on the same chromosome. Without crossing over, all of the genes on a given chromosome constitute a linkage group, and the number of linkage groups in an organism is equal to the number of autosomes in a haploid cell.


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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).
 
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