STR基因座以其等位基因片段长度小,可复合扩增,对DNA检材质量要求不高,分析方法简捷明了,且在人群中分布广泛,多态性好,突变率低,种属特异性高,成为法科学DNA分析中最常用的遗传标记。作者选择D16S5 3 9、TH0 1、TPOX、CSF1PO等4个STR基因座,运用荧光标记复合扩增,扩增产物在DN STR alleles with its allele fragment length is small, can be composite amplification, the quality of the DNA sample is not high, the analysis method is simple and clear, and widely distributed in the population, good polymorphism, low mutation rate, species-specific High, as the science of DNA analysis of the most commonly used genetic markers. The authors chose four STR loci, D16S5 3 9, TH0 1, TPOX, and CSF1PO, amplified them by fluorescent labeling and amplified their products in DN