Definition for Difference between revisions of "Genetic recombination"
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(Created page with "Genetic recombination is the production of new combinations of alleles, encoding a novel set of genetic information, e.g., by the pairing of homologous chromosomes in meiosis, or...") |
(major source of genetic variation among organisms caused by re-assortment or crossing over during meiosis) |
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| − | Genetic recombination is the production of new combinations of alleles, encoding a novel set of genetic information, e.g., by the pairing of homologous chromosomes in meiosis, or by the breaking and rejoining of DNA strands, which forms new molecules of DNA. This last type of recombination can occur between similar molecules of DNA, as in the homologous recombination of chromosomal crossover, or dissimilar molecules, as in non-homologous end joining. V(D)J recombination in organisms with an adaptive immune system is a type of genetic recombination that helps immune cells rapidly diversify to recognize and adapt to new pathogens. Recombination is a common method of DNA repair in both bacteria and eukaryotes. | + | <p>Genetic recombination is the production of new combinations of alleles, encoding a novel set of genetic information, e.g., by the pairing of homologous chromosomes in meiosis, or by the breaking and rejoining of DNA strands, which forms new molecules of DNA. This last type of recombination can occur between similar molecules of DNA, as in the homologous recombination of chromosomal crossover, or dissimilar molecules, as in non-homologous end joining. V(D)J recombination in organisms with an adaptive immune system is a type of genetic recombination that helps immune cells rapidly diversify to recognize and adapt to new pathogens. Recombination is a common method of DNA repair in both bacteria and eukaryotes. |
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Latest revision as of 05:08, 10 February 2014
Genetic recombination is the production of new combinations of alleles, encoding a novel set of genetic information, e.g., by the pairing of homologous chromosomes in meiosis, or by the breaking and rejoining of DNA strands, which forms new molecules of DNA. This last type of recombination can occur between similar molecules of DNA, as in the homologous recombination of chromosomal crossover, or dissimilar molecules, as in non-homologous end joining. V(D)J recombination in organisms with an adaptive immune system is a type of genetic recombination that helps immune cells rapidly diversify to recognize and adapt to new pathogens. Recombination is a common method of DNA repair in both bacteria and eukaryotes.