recombination /re·com·bi·na·tion/ (re″kom-bĭ-na´shun)
recombination
recombination [re″kom-bĭ-na´shun]
1. the reunion, in the same or different arrangement, of formerly united elements that have been separated.
2. in genetics, the process that creates new combinations of genes by shuffling the linear order of the DNA.
re·com·bi·na·tion (r  k m-b -n  shn)n. The natural formation in offspring of genetic combinations not present in parents by the processes of crossing over or independent assortment. |
recombination
[rē′kombinā′shən]
Etymology: L, re + combinare
1 the formation of new arrangements of genes within the chromosomes as a result of independent assortment of unlinked genes, crossing over of linked genes, or intracistronic crossing over of nucleotides. See also recombinant DNA.
2 the coupling of oppositely charged ions liberated by ionizing radiation. Ionic recombination lowers the total number of charges collected by a dosimeter, thus causing the radiation dose to be underestimated. A technique for determining the magnitude of ionic recombination is routinely applied in accurate dosimetry.
recombination [re″kom-bĭ-na´shun]
1. the reunion, in the same or different arrangement, of formerly united elements that have been separated.
2. in genetics, the process that creates new combinations of genes by shuffling the linear order of the DNA, such as occurs naturally by crossing over of homologous chromosomes during meiosis or of homologous DNA sequences in somatic cells during mitosis, or occurs in vitro when DNA or RNA is manipulated for genetic engineering.
bacterial recombination in bacterial genetics, the process of producing a new gene by any of several processes, e.g., the sexual union of two parents, molecular crossing over between two DNA chains, or transformation.
recombination
the reunion, in the same or different arrangement, of formerly united elements that have been separated; in genetics, the formation of new gene combinations due to crossing over by homologous chromosomes. Recombination occurs between viruses such as influenza or bluetongue which have segmented genomes. Called also reassortment.
recombination frequency
the frequency of exchange between two genes on the same chromosome.
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