null allele

When null alleles were considered,one locus(TUMXLv8.

220在两个家系中均存在无效等位基因,从而3个不符合孟德尔遗传基因型中2个可由无效等位基因来解释。

Two markers were observed to produce null alleles;and when null alleles were considered,there were 4 loci showing segregation distortion at 5% significance level.

选择其中的55条序列设计引物,筛选出其中的20对引物检测它们在海湾扇贝CC10家系的双亲和94个子代个体中的分离情况,结果表明:(1)其中6个位点在母本和子代中发生分离,10个位点在父本和子代中发生分离,4个为双亲共享位点;(2)2个位点存在无效等位基因;(3)16个位点符合孟德尔遗传定律,4个位点的子代个体基因型频率偏离孟德尔遗传定律。

Mean heterozygosity(H),mean polymorphism information contents(PIC)and mean effective number of alleles(N e)calculated by above two type of genetic marker data were compared.

随机抽取湖羊 6 3只、同羊 6 5只分别进行 14个结构基因座和 7个微卫星标记的遗传检测 ,比较由两种遗传标记获得的群体基因平均杂合度 (H)、多态信息含量 (PIC)及群体有效等位基因数 (Ne)。

Effective number of alleles and Nei\'s expected average heterozygosity were 1.

[结果]4个犬群中,Tf、Po和Sα23个基因座上存在多态性,其中Tf和Po分别由3个等位基因控制,Sα2由2个等位基因控制,Hb、Alb、Pr和Amy基因座均呈现单态;藏獒群体的有效等位基因数(Ne)和Nei氏平均预期基因杂合度(H)分别为1。