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CriminalratewasrisingyearafteryearinthenorthwestChina .Itisnecessarytoestablishthefo rensicDNAdatabase .Thereweremanyshorttan demrepeats (STRs)thatappearedtobeabundantandoccurred 15 - 2 0kbonaverageinthehumange nome .STRlociconsistedof 2 - 6bpinlengthasitscoresequences[1] .Thecharacteristicsofhighlyeffi cientandmultipleamplificationmadeSTRsuperiortothetraditionalgeneticmarkers .Alloftheselect edSTRlocihadcommonalleleslessthan 35 0bpinsize[2 ] .STRwasthemostidealgeneticmarkerbe causeofi… 相似文献
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