Mathematical contributions to the theory of evolution. XI.—On the influence of natural selection on the variability and correlation of organs
Mathematical contributions to the theory of evolution. XI.—On the influence of natural selection on the variability and correlation of organs
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十一、数学对进化论的贡献——论自然选择对器官变异性和相关性的影响。
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通讯作者：
K. Pearson
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作者：
K. Pearson
直接自然选择或人工选择对一个种族的性状的影响，是进化论中定量评价的基本问题。我在本系列的早期回忆录中已经展示了随机选择的效果，或者更好地称之为随机抽样，对人口特征的影响。将几个随机抽样的个体分离出来，可能会使种族性状发生非常合理的变化，但我们必须在最大范围内寻找定向选择的变化。
The influence of directed—natural or artificial—selection on the characters of a race is one which it is fundamental for the purposes of evolution to appreciate quantitatively. I have already shown in an earlier memoir of this series the effect of random selection, or what it is better to term random sampling, on the characters of a population. Isolation of a few individuals who form a random sample may produce very sensible modifications of race characters, but it is to directed selection that we must look for changes on the largest scale.