Thompson V
Genetics. 1977 Jan;85(1):125-40. doi: 10.1093/genetics/85.1.125.
Most biologists beleive that recombination speeds response to selection for traits determined by polygenic loci. To test this hypothesis, sixteen Drosophila melanogaster populations were selected for positive phototaxis for twenty-one generations. In some populations, balancer chromosomes were used to suppress autosomal recombination, and in others the autosomes were free to recombine. Suppression of recombination had no effect on mean rate of response to selection, though it may have increased variability in the rate of response among replicate lines. Suppressed recombination lines did not shift selection response to the freely recombining X chromosomes, despite fairly large increased in X chromosome recombination. The results suggest that in populations of moderate size, sex does not accelerate short term response to selection.
大多数生物学家认为，重组会加快对由多基因位点决定的性状的选择反应。为了验证这一假设，对16个黑腹果蝇种群进行了21代的正向趋光性选择。在一些种群中，使用平衡染色体来抑制常染色体重组，而在另一些种群中，常染色体可自由重组。重组的抑制对选择反应的平均速率没有影响，尽管它可能增加了重复品系间反应速率的变异性。尽管X染色体重组有相当大的增加，但受抑制的重组品系并没有将选择反应转移到自由重组的X染色体上。结果表明，在中等规模的种群中，性别不会加速对选择的短期反应。
