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recombination (re″kom-bĭ-na´shәn)   reunion, in the same or different arrangement, of formerly united elements that have been separated.
  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, such as sexual union of two parents, molecular crossing over between two DNA chains, or transformation.





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