摘要
在普通群体中,建立了3个及3个以上复等位基因的基因频率、基因型频率和随机交配率的关系及其数学模型,讨论了复等位基因及其频率,以及由复等位基因所构成的各种基因型频率在世代中的动态规律、遗传趋势、群体平衡及其性质。结果表明,在普通群体遗传中,非平衡群体的数学模型(4)可以转换为随机交配群体的数学模型和非平衡自交群体的数学模型;平衡群体的数学模型(7)可以转换为随机交配群体的数学模型和平衡自交群体的数学模型。在普通群体遗传平衡时,当3个复等位基因频率相等且随机交配率等于3/5时,群体各种基因型频率相等。
This article established the relation among gene frequency, genotypic frequency and the rate of random mating for three and more than three multiple alleles as well as its mathematics model in a general population. Multiple alleles rate and dynamic rule, the trend of genetic, the population equilibrium and related characteristics of all kinds of genotypic frequencies composed of multiple alleles in generations were discussed. The results show that the model of the disequilibrium population i. e. （4） can be transformed into the mathematics models of the random mating population and disequilibrium mating population in a general population＇s genetic; the model of the equilibrium population i. e. （7） can be transformed into the mathematics models of the random mating population and the equilibrium mating population. All kinds of genotypic frequencies are equal when three multiple alleles＇ frequencies are equal and the rate of random mating Ke is three-fifth.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2007年第5期77-80,共4页
Journal of Northwest A&F University(Natural Science Edition)
关键词
普通群体
遗传机制
复等位基因
基因型频率
general population
genetic mechanism
multiple alleles
genotypic frequency
