随机漂变对群体遗传基础的影响研究  

The Effect of Random Drift on Population Genetic Basis

作　　者：苏国生[1] 

机构地区：[1]福建农学院牧医系,福州350002

出　　处：《黄牛杂志》1993年第4期10-12,共3页Journal of Yellow Cattle Science

摘　　要：通过电子计算机的模拟实验,研究随机飘变对群体遗传基础的影响,结果表明,各世代亚群平均基因频率与原始群体的基因频率基本保持一致;原始群体基因频率与0.5离差越大,亚群平均杂合子频率下降的速度及基因频率方差增加的速率越慢,而亚群达到纯合固定的速率则越快。The computer simulation was used to study the effect of random drift on populationgenetic basis. The result showed that the average gene frequency of sub populaton in ev-ery generation seems unanimous to the gene frequency of original population. The largerthe bias of gene frequency of original population from 0. 5 is, the slower the decreaserate of average hetrozygote frequency in sub--population and the increase rate of variance of gene frequency are, but the fast the fixing rate of the homozygote in sub--population.

关 键 词：随机漂变 计算机 群体遗传 基因 

分 类 号：S813.2[农业科学—畜牧学]