Dictionary » L » Linkage

Linkage

Linkage

(Science: genetics) tendency for two or more non-allelic genes to be inherited together, because they are located more or less closely on the same chromosome.

thus parental combinations of characters are found more frequently in offspring than nonparental. Linkage is measured by the percentage recombination between loci.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Re: Genes in the same linkage group are inherited together?

A centimorgan is the distance between two loci where the frequency of a crossover between the two loci per generation is 0.01. So the frequency of crossover between two genes 1.5 cM apart will be 0.015, and the frequency of a crossover between genes 140 cM apart will be 1.4. The alleles of the all g...

See entire post
by wbla3335
Fri Jul 19, 2013 6:38 am
 
Forum: Genetics
Topic: Genes in the same linkage group are inherited together?
Replies: 5
Views: 3218

Genes in the same linkage group are inherited together?

Hi jonmoulton and wbla3335, Thanks for your post! So those 43 genes (alleles of them) in the same linkage group are inherited together. But how likely are they inherited together? I know this is hard to answer. But some genes are only 1.5cM away and others are as far as ...

See entire post
by Young
Thu Jul 18, 2013 6:42 am
 
Forum: Genetics
Topic: Genes in the same linkage group are inherited together?
Replies: 5
Views: 3218

Re: Genes in the same linkage group are inherited together?

... the same barring genetic events such as deletions, insertions, translocations, or inversions. You can get more information by searching for "linkage disequilibrium" and "genetic hitchhiking".

See entire post
by wbla3335
Wed Jul 17, 2013 5:42 pm
 
Forum: Genetics
Topic: Genes in the same linkage group are inherited together?
Replies: 5
Views: 3218

Re: Genes in the same linkage group are inherited together?

The map distance tells you how closely linked the genes are. The shorter the map distance, the higher the probability of co-inheritance and the more tightly linked the genes are ("tightly linked" and "close map distance" are pretty much synonymous). "the closer genes are wit...

See entire post
by jonmoulton
Wed Jul 17, 2013 2:51 pm
 
Forum: Genetics
Topic: Genes in the same linkage group are inherited together?
Replies: 5
Views: 3218

Genes in the same linkage group are inherited together?

Hi, I'm interested in a particular gene. Wang et al. (2009) found that the gene is in some linkage group that contains 43 genes ( http://genomebiology.com/2009/10/11/r126 ). When you say a gene is in a linkage group, does that mean that most likely all the genes ...

See entire post
by Young
Wed Jul 17, 2013 4:50 am
 
Forum: Genetics
Topic: Genes in the same linkage group are inherited together?
Replies: 5
Views: 3218
View all matching forum results

This page was last modified 21:16, 3 October 2005. This page has been accessed 31,410 times. 
What links here | Related changes | Permanent link