Some Advantages and Disadvantages of Recombination

Sarah P. Otto, Marcus W. Feldman and Freddy B. Christiansen

Working Papers from Santa Fe Institute

Abstract: Recombination, including chromosomal segregation, shuffles together the genetic material carried by different members of a sexual species. This genetic mixing unties the evolutionary fate of alles at one locus from the fate of alleles at neighboring loci and can increase the amount of genetic variation found within a population. In the process, however, recombination separates advantageous gene combinations, the very gene combinations that enabled the parents to survive and reproduce. Whether or not the adaptation of a population to an environment is more rapid in the presence of recombination, that is, whether or not recombination speeds up the evolutionary process, depends critically on the ways in which this process is modelled. As we shall see, the effect of recombination depends on the population size, the initial population composition, and the selection regime under consideration.

Date: 1993-03
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