蒙古山羊和哈萨克山羊GOLA-DRB3基因的HaeⅢ酶切多态性分析

采用限制性内切核酸酶HaeⅢ对蒙古山羊和哈萨克山羊GOLA-DRB3基因外显子2的285bp扩增产物进行了PCR-RFLP多态性分析,共检测到17种基因型,由A、B、C、D、E、F和H等7个复等位基因控制;通过酶切图谱分析发现蒙古山羊和哈萨克山羊的GOLA-DRB3基因外显子2的154、168和220位碱基表现出多态性。并对基因型频率和等位基因频率进行了统计分析,结果表明,GOLA-DRB3基因的部分基因型频率和等位基因频率在两个群体之间差异显著（P＜0.10或P＜0.05）或极显著（P＜0.01）; χ2适合性检验结果表明,蒙古山羊和哈萨克山羊的GOLA-DRB3基因外显子2的HaeⅢ酶切位点均未达到Hardy-Weinberg平衡状态（P＜0.01）。 Abstract:The exon2 of GOLA-DRB3 gene was amplified and a uniform fragment of 285bp was obtained in Mongolian Goat and Kazakh Goat.The 285bp PCR product was digested with restriction endomuclease HaeⅢ and genetic polymorphism was investigated by PCR-RFLP.Seventeen kinds of genotypes were found in two populations,which were controlled by seven alleles.There are significant differences in some genotypic frequencies and gene frequencies between the two populations（P＜0.10,P＜0.05,P＜0.01）;The results of χ2 test showed that genotypes of GOLA-DRB3 gene in two populations did not fit with Hardy-Weinberg equilibrium（P＜0.01）.