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男女性别差异由Y染色体决定。正常男性拥有Y染色体，而女性则没有。长期以来，Y染色体一直被用作性别鉴定。随着DNA技术的广泛应用，Y染色体中STR位点[1]和其它数干碱基对长的高变序列的RFLP分析已经被用于人类Y-染色体的个性确定[2、3]。此外，存在于低拷贝数序列中的一些点突
Sex differences between men and women determined by the Y chromosome. Normal men have Y chromosomes, while women do not. The Y chromosome has long been used as a sex marker. With the widespread use of DNA technology, RFLP analysis of hypervariable sequences at the STR locus [1] and several other stem base pairs in the Y chromosome has been used to determine the identity of human Y-chromosomes [2,3]. In addition, there are some spots in the low copy number sequence