linkage group


linkage group

noun

Definition of LINKAGE GROUP

:  a set of linked genes at different loci on the same chromosome

First Known Use of LINKAGE GROUP

1921

linkage group

noun    (Medical Dictionary)

Medical Definition of LINKAGE GROUP

: a set of genes at different loci on the same chromosome that except for crossing-over tend to act as a single pair of genes in meiosis instead of undergoing independent assortment

linkage group

noun    (Concise Encyclopedia)

All the genes on a single chromosome. They are inherited as a group; during cell division they act and move as a unit rather than independently. Variations in linkage groups can occur if a chromosome breaks, and the sections join with the partner chromosome if it has broken in the same places. This exchange of genes between chromosomes, called crossing-over, usually occurs during meiosis. Sex linkage is the tendency of a characteristic to be linked to one sex; sex-linked traits in humans include red-green colour blindness and hemophilia.

Browse

Next Word in the Dictionary: link and pin coupler
Previous Word in the Dictionary: linkage
All Words Near: linkage group

Seen & Heard

What made you want to look up linkage group? Please tell us where you read or heard it (including the quote, if possible).

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More