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Science 19 October 2001:
Vol. 294. no. 5542, pp. 555 - 559
DOI: 10.1126/science.1061380
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Research Articles
Sexual Recombination and the Power of Natural Selection
William R. Rice,*
Adam K. Chippindale
Theory predicts that recombination will increase the effectiveness
of natural selection. A Drosophila melanogaster model system was developed that increased experimental power with the use of high
experimental replication, explicit tracking of individual genes, and
high but natural levels of background selection. Each of 34 independent
experiments traced the fate of a newly arisen mutation located within
genome-wide, synthetic chromosomes that were propagated with or without
recombination. An intrinsic advantage to recombination was demonstrated
by the finding that the realized strength of selection on new mutations
was markedly increased when recombination was present.
Department of Ecology, Evolution and Marine Biology, University of
California, Santa Barbara, CA 93106-9610, USA.
*
To whom correspondence should be addressed. E-mail:
rice{at}lifesci.ucsb.edu
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