群体融合对遗传方差的影响

探讨了群体融合对遗传方差的影响,无显性时基因型方差对群体中的基因频率为一凸函数,群体融合将导致它的增加,完全显性时,当群体中显性基因的频率时,群体融合导致基因型方差增加;而当时,融合导致基因型方差减小。超显性时,群体融合导致基因型方差增加,对加性方差和显性方差也分别进行了探讨。

Influence of Population Fusion on Genotypic Variance

Effect of population fusion on genetic valiance was explored. Without dominance the genotypic variance is greater after fusion than that before fusion. When dominance is complete, the genotypic variance is greater after fusion than thatbefore fusion if , and the genotypic variance is smaller afterfusion than that before fusion if . In overdominance the geno-typic variance is greater after fusion than that before fusion.