种群结构和数量特征。
Population structure and quantitative characters.
机构信息
Department of Anthropology, University of New Mexico, Albuquerque, New Mexico 87131.
出版信息
Genetics. 1983 Dec;105(4):985-1002. doi: 10.1093/genetics/105.4.985.
A migration matrix model is used to investigate the behavior of neutral polygenic characters in subdivided populations. It is shown that gametic disequilibrium has a large effect on the variance among groups but none at all on its expectation. The variance of among-group variance is substantial and does not depend on the number of loci contributing to variance in the character. It is just as large for polygenic characters as for single loci with the same additive variance. This implies that one polygenic character contains exactly as much information about population relationships as one single-locus marker. The theory is compared with observed differentiation of dermatoglyphic and anthropometric characters among Bougainville islanders.
采用迁移矩阵模型研究了分裂群体中中性多基因特征的行为。结果表明，配子不平衡对群体间方差有很大影响，但对其期望值没有影响。群体间方差的方差很大，与导致特征方差的基因座数量无关。对于多基因特征和具有相同加性方差的单基因座来说，情况都是如此。这意味着一个多基因特征包含的关于群体关系的信息量与一个单基因座标记完全相同。该理论与布干维尔岛民的皮纹和人体测量特征的观察分化进行了比较。
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