linkage group
Noun: 1. A set of genes located on the same chromosome that tend to be inherited together: In genetics, a "linkage group" refers to all the genes that are physically connected on a single chromosome. Because they are linked, these genes are more likely to be passed on as a unit during reproduction rather than being independently assorted.
The term "linkage group" is used in the field of genetics to describe and map the relative positions of genes on a chromosome. It is a fundamental concept for understanding inheritance patterns that deviate from Mendel's law of independent assortment. - Scientists identified a new gene within the known linkage group on chromosome 7. - The number of linkage groups in an organism corresponds to its number of chromosome pairs.
- Genetic Mapping: Linkage groups are the basis for creating genetic maps, which show the order and relative distance between genes on a chromosome.
- By analyzing recombination frequencies, researchers constructed a detailed map of the linkage group.
- Genetic Linkage (n): The general phenomenon where genes located close together on a chromosome are inherited together.
- Linked Genes (n): Specific genes that are part of the same linkage group.
- Chromosome (in a genetic mapping context): While not perfectly synonymous, a linkage group essentially represents all the linked genes on one chromosome.
- Synteny group: A related term often used in comparative genomics to describe groups of genes found together on the same chromosome in different species.
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any pair of genes that tend to be transmitted together
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the genes of Drosophila fall into four linkage groups
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