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Science 19 October 2001:
Vol. 294. no. 5542, p. 473
DOI: 10.1126/science.294.5542.473h
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The experimental evaluation of the adaptive significance of sexual recombination has been hampered by inconsistent experimental results. Rice and Chippindale (p. 555; see the Perspective by Lensky) present a set of Drosophila experiments that directly compared nonrecombining and freely recombination replicates. In the nonrecombining population, the variability among lines was very large, as expected, but the average increase in the favored allele was slight and seemed to saturate after about eight generations. In the recombining strain, the fitness continued to increase throughout the experiment.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)