本文的第二章是全文的基础，第二章给出了考虑两连锁基因座位时，任一具有遗传关系的亲属对(诸如父子、同胞、祖孙等)基因型的联合分布模型。

Chapter two is the foundation of full paper, and it constructs a model about the joint distribution of the genotype on two linkage loci of any relative pair with some genetic relation.

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根据这5个座位等位基因的频率，我们计算了群体间的遗传距离。

According to the allelic frequences of the 5 loci, a genetic distance between the above-mentioned populations was calculated.

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行为规癖作为受多基因座位和非遗传因素共同作用的数量性状，不仅受微效多基因的影响，也可能受一个或几个主基因的影响。

Stereotypies as quantitative trait that are affected by both multiple genetic loci and non-genetic factors may be controlled by the possible presence of one or more major genes.

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