Peters C, Schneider V, Epplen J T, Pöche H
Institut für Rechtsmedizin, Freie Universität Berlin, Dahlem, Germany.
Eur J Clin Chem Clin Biochem. 1991 May;29(5):321-5. doi: 10.1515/cclm.1991.29.5.321.
Restriction fragment length polymorphisms (RFLPs) associated with interspersed simple repetitive DNA arise from DNA fragment lengths that contain variable numbers of the repeated motifs. Using restriction enzymes with different 4 base pair recognition sites and the simple triplet repeat hybridization probe, (GTG)5/(CAC)5, DNA multilocus fingerprints can be obtained in man. Only the DNAs of monozygous twins show indistinguishable banding patterns. Since the bands are inherited according to Mendelian laws, DNA fingerprints can be used for identification of individuals and paternity analysis. The discriminatory power in the DNA fingerprinting technique in forensic science is demonstrated and examples of paternity testing are given.
与散布的简单重复DNA相关的限制性片段长度多态性(RFLP)源于包含可变数量重复基序的DNA片段长度。使用具有不同4碱基对识别位点的限制性内切酶和简单的三联体重复杂交探针(GTG)5 /(CAC)5,可以在人类中获得DNA多位点指纹图谱。只有同卵双胞胎的DNA显示出无法区分的条带模式。由于这些条带是按照孟德尔定律遗传的,因此DNA指纹图谱可用于个体识别和亲子鉴定分析。文中展示了法医科学中DNA指纹技术的鉴别能力,并给出了亲子鉴定的实例。