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三、方差估值的利用方差是群体的最重要特征之一。在遗传理论和育种实践上,都可由之得到一些重要的科学信息。以下列述几个重要方面: (一) 显性势估计在《世代平均数的遗传分析》一文中,我们曾论及,h/d是度量显性程度的;但推广于多基因系统时,势能比[h]/[d]并不能说明任一位点上基因的显性性质。因为∑d和∑h都可因有正有负而相消,除非两个亲本分别集中了所有显性和隐性等位基因。
Third, the use of variance valuation Variance is one of the most important features of the group. In the theory of genetics and breeding practice, we can get some important scientific information. Here are a few important points: (1) Explicit evaluation In the article “Genetic Analysis of Generations of Averages,” we have argued that h / d is a measure of the degree of dominance; however, when applied to polygenic systems, Potential ratio [h] / [d] does not indicate the dominant nature of the gene at any locus. Because Σd and Σh can both be positive and negative, unless both parents focus on all dominant and recessive alleles, respectively.