Variability of Species
Variability of Species
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物种变异
作者：
R. Fisher;E. Ford
作者们一方面研究了鳞翅目35种昆虫（主要是英国常见的蛾类）的变异性，另一方面研究了在自然选择的影响下，在完全按照孟德尔遗传方式表现出相应的适当突变频率的种群中，理论上预期会发生的变异。他们各自得出的结论显示出足够惊人的一致性，从而提出了一种可能普遍适用于野生物种的自然变异性的理论。
THE writers have, on one hand, been examining the variability of thirty-five species of Lepidoptera, chiefly common British moths, and, on the other hand, studying the variation to be expected theoretically in a population exhibiting inheritance wholly on Mendelian lines, with the corresponding appropriate mutation frequencies, under the influence of natural selection. The conclusions at which they have respectively arrived show a sufficiently striking agreement to suggest a theory which may be generally applicable to the natural variability of wild species.