与野生群体相比，养殖群体的多态位点比例和杂合度都有不同程度的降低。

Compared with the wild population, the cultivated population has a lower percentage of polymorphic loci and heterozygosity.

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从猪蛋白质（酶）多态性和DNA分子水平上估测出亲本种群间的遗传距离，探讨它们与基因杂合度及经济性状杂优率之间的关系。

Parental genetic distances were evaluated by plasma protein(enzyme) polymorphisms and DNA molecular level. Their relationship with gene heterozygosities and heterosis of various traits were analyzed.

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结论D 12s1686位点具有较高的杂合度和多态信息含量，在基因连锁分析和群体遗传学研究中具有重要的应用价值。

Conclusion: D12S1686 is such a valuable genetic marker that it can be used to gene linkage analysis and population genetics research.

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