普通群体的遗传机制Ⅰ.1对等位基因的遗传

研究建立了普通群体遗传的系列数学模型,系统讨论了1对等位基因所构成的3种基因型频率在群体中的动态规律、遗传趋势、频率变化与世代的关系,以及群体平衡时的特殊性质,并对普通群体、近亲交配群体及其参数与性质进行了对比分析和讨论。结果表明,随机交配群体和自交群体是普通群体的两种极端;随机交配率越大群体趋于平衡越快;随机交配率与杂合子频率呈正相关,与纯合子频率呈负相关;随机交配率大于零时,等位基因频率相等,杂合子频率最高;随机交配率等于1／2且等位基因频率相等时,3种基因型频率相等。

Genetic law in general population Ⅰ. Heredity a couple of allele

The paper discussed the relation between genetic law,genetic trend,generatioaand equilibrium population of three genotype frequency consisting of a couple allele in general population. Meanwhile,it established series mathematics model and analyzde and contrastde the general population and inbreeding population. The results showed as follows :panmixis populations and self populations are two extremes in general population. The higher the panmixis rate is,the faster the population shows tendency to equilibrium. When a population reaches equilibrium, the panmixis rate is directly proportional to a heterozygous frequency and diversely proportional to a homozygous frequency;When r>0 and p=q=1/2,heterozygous frequency is highest;when r=1/2,m1=m2=m3 = 1/3.