排序方式: 共有34条查询结果,搜索用时 31 毫秒
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北京地区人群(汉族)人血清备解素因子B分布频率的调查及其在血痕中的检出 总被引:1,自引:0,他引:1
作者采用琼脂糖凝胶高压电泳、PAGIEF及免疫固定技术测定了北京地区234份健康人(汉族)血清Bf的分布。其表型频率为SS171人,FS49人,FF8人,SS07 4人,FS07 1人及SS045 1人;基因频率为Bf~S=0.8462,Bf~F=0.1410,Bf~(S07)=0.0107,Bf~(S045)=0.0021。Bf表型分布与Hardy-Weinberg定律相吻合。经测定室温保存的已知Bf型的22份血痕,其可检出时限为3周。并将Bf型测定用于检案的血痕分析及亲权鉴定。 相似文献
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目的建立荧光标记复合扩增D1S2142,D13S1492,D14S306,D15S659基因座检测分型方法,并对成都汉族群体4个基因座的遗传多态性进行调查。方法用6-FAM标记D1S2142和D15S659引物,HEX、TMR分别标记D14S306和D13S1492引物,PCR复合扩增,310基因分析仪电泳自动收集电泳结果数据,GeneScan Analysis Software3.7NT软件计算扩增产物片段相对大小,Genotyper(3.7NT软件进行样本基因型分型,建立了荧光标记复合扩增检测4个STR基因座基因型的方法,对145名成都汉族无关个体样本进行分型。结果荧光标记复合扩增D1S2142,D13S1492,D14S306,D15S659基因座,每个STR基因座都获得了清晰的基因型分型结果。145份样本,4个STR基因座分别检出10,14,7,12个等位基因和22,54,21,39种基因型,其基因型分布均符合Hardy-W e inberg平衡。4个基因座在成都汉族群体的杂合度分别依次为0.7793,0.8345,0.7793和0.8345;多态信息含量分别依次为:0.7656,0.8730,0.7470和0.8312。累计非父排除率为0.9783,累计个人识别机率为0.9999 917。结论荧光标记复合扩增D1S2142,D13S1492,D14S306,D15S659基因座,可实现对每个基因座准确分型;成都汉族群体该4个基因座的遗传学数据,可为群体遗传学和法医学研究与应用提供基础资料。 相似文献
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D18S872基因座在汉、维、蒙古、回族群体中的遗传多态性研究及其应用 总被引:1,自引:0,他引:1
目的 调查D18S872基因座在成都汉族 ,新疆维族和蒙古族 ,甘肃回族 4个民族中的遗传多态性 ,获得群体遗传学基本数据。 方法 等位基因分型标准物制备采用分子克隆技术 ,样本基因分型采用PCR和PAG垂直电泳技术、银染显色方法。 结果 获得D18S872基因座等位基因分型标准物及该基因座在 4个群体中的遗传学数据。 结论 结果表明D18S872基因座在法医学个人识别和亲子鉴定中有一定的应用价值。 相似文献
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R.G. Cowell S.L. Lauritzen J. Mortera 《Forensic Science International: Genetics Supplement Series》2011,5(3):202-209
This paper presents a coherent probabilistic framework for taking account of allelic dropout, stutter bands and silent alleles when interpreting STR DNA profiles from a mixture sample using peak size information arising from a PCR analysis. This information can be exploited for evaluating the evidential strength for a hypothesis that DNA from a particular person is present in the mixture. It extends an earlier Bayesian network approach that ignored such artifacts. We illustrate the use of the extended network on a published casework example. 相似文献
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Marian C Anghel A Bel SM Ferencz BK Ursoniu S Dressler M Popescu O Budowle B 《Forensic science international》2007,170(1):73-75
Allele frequencies for the 15 tetranucleotide short tandem repeat loci contained in the AmpFlSTR Identifiler kit were obtained from a population sample of 219 unrelated individuals born in the western part of Romania. 相似文献
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《Forensic Science International: Genetics Supplement Series》2013,4(1):e51-e52
Allelic drop-out continues to be a challenge to forensic geneticists when interpreting crime scene evidence and calculating the evidential weight. Methods exist for estimating the probability of allelic drop-out, where the most promising methods use the signal intensities as input for quantifying the drop-out probability. Using data from real crime cases, we demonstrate that taking degradation of the biological material and truncation of the data due to a detection threshold into account is superior to previous approaches. An additional correction for stuttering effects showed limited improvement. 相似文献
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