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Y染色体呈父系遗传,所有基因座之间存在连锁关系,而且Y-STR基因座在不同人群的差异远远高于常染色体基因座。故Y-STR基因座分析在单亲父子对或可疑父亲缺席的父权鉴定及混合检材(精液与阴道液)的检验中以及人类遗传学研究中的特殊价值日益受到人们的重视。DYS19、DYS390是Y染色
The Y chromosome was inherited from the paternal lineage and all the loci were linked together. Moreover, the difference of Y-STR loci in different populations was much higher than that of autosomal loci. Therefore, the special value of Y-STR locus analysis in the paternity testing and the mixed samples (sperm and vaginal fluid) examination of absence of single parents or suspicious fathers and in the study of human genetics is receiving more and more attention. DYS19, DYS390 is Y-stained