Dictionary » R » Recombination

Recombination

Definition

noun, plural: recombinations

(1) (genetics) The process or act of exchanges of genes between chromosomes, resulting in a different genetic combination and ultimately to the formation of unique gametes with chromosomes that are different from those in parents.

(2) (general) The process or act of bringing together (dissociated materials) once more.


Supplement

In genetics, recombination occurs during meiosis when chromosomes exchange genes. Thus, recombination is one of the important means to promote and increase genetic diversity between generations.


Word origin: re- (again) + combination

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Results from our forum


Re: Evolution of the Face and Head

... offspring could have both mutations. In an example where these 2 mutations lie on the same chromosome at different loci, I understand that through recombination these mutant alleles can be combined onto one chromosome. Thus lots of offspring will have both mutations.

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by Draco02
Wed Mar 25, 2015 12:03 pm
 
Forum: Evolution
Topic: Evolution of the Face and Head
Replies: 5
Views: 5215

I have got some BIG issues! forgive the long post

... expected by chance. The non-random pairing of alleles in the MHC is called gametic or linkage disequilibrium (LD) and it is influenced by the low recombination rate in the MHC region. The LD could extend over the whole MHC and for instance the alleles A1, B8, TNFa2, DR3, DQ2, TAP2*0101 and DPB1*0101, ...

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by saddy51
Sun Jan 04, 2015 10:39 am
 
Forum: Genetics
Topic: I have got some BIG issues! forgive the long post
Replies: 1
Views: 1752

Re: Which has a greater impact of evolution, mutations or genet

Am I correct in stating that, within a population of sexually reproducing organisms, genetic recombination produces more genetic variation compared to mutations and thus is a more important source on of variability on which natural selection operates, whereas in populations ...

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by Cat
Fri Oct 31, 2014 2:26 am
 
Forum: Evolution
Topic: Which has a greater impact of evolution, mutations or genet
Replies: 1
Views: 1004

Which has a greater impact of evolution, mutations or genet

... textbook states that mutations are rare and that large genetic variations in a population of organisms that reproduce sexually is due to genetic recombination. However, this book does not tell me which source of genetic variability, mutations or recombination, produce the largest genetic variations ...

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by alpha78
Sun Oct 19, 2014 2:57 pm
 
Forum: Evolution
Topic: Which has a greater impact of evolution, mutations or genet
Replies: 1
Views: 1004

Mutagenesis

... First you use a sequence with the selection marker (as usually), but that is later excised by I-SceI cleavage and the second Red recombination.

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by JackBean
Sun May 11, 2014 6:35 pm
 
Forum: Genetics
Topic: Mutagenesis
Replies: 2
Views: 1562
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