选择差和选择系数。
Selection differentials and selection coefficients.
机构信息
Department of Zoology, The University of Iowa, Iowa City, Iowa 52242.
出版信息
Genetics. 1978 Feb;88(2):391-403. doi: 10.1093/genetics/88.2.391.
Abstract
Proof is offered that s approximately ig for all forms of selection where fitness is a nondecreasing function of a normally distributed phenotype (called fitness potential); s is selection coefficient, i is standard selection differential, and g is standard differential effect of a locus genotype.Evidence is presented that the cost of selection does not limit genic polymorphism; that truncation selection is not necessary for high cost-efficiency; and that opposing directions of selection in a heterogeneous environment do not reduce cost-efficiency critically.
摘要
证明表明，当适应度是正态分布表型（称为适应度潜力）的增函数时，s 大约为 ig，适用于所有形式的选择；s 是选择系数，i 是标准选择差，g 是基因座基因型的标准差异效应。本文提出，选择的代价不会限制基因多态性；高成本效率不需要截断选择；异质环境中选择的相反方向不会显著降低成本效率。
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本文引用的文献
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Heterosis as a major cause of heterozygosity in nature.杂种优势是自然界中杂合性的主要原因。
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2
Continuously distributed factors affecting fitness.影响适应性的连续分布因素。
Genetics. 1967 Mar;55(3):483-92. doi: 10.1093/genetics/55.3.483.
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The number of balanced polymorphisms that can be maintained in a natural population.能够在自然种群中维持的平衡多态性的数量。
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