袁 丽

【摘 要】 DNA 分析技术有坚实的理论基础、成熟的操作技术和高度自动化检测仪器，能够达到同一认定的地步，与其他物证技术相比具有高度科学性、可靠性和准确性，是科学证据中的佼佼者。然而，DNA 证据对案件事实的证明作用受多种因素制约，其中包括遗传标记分析的影响。同一份生物物证，检测的遗传标记类型不同，采用识别体系大小不同，其结果解释不同，获得DNA证据的证明力大不相同。

【关键词】 遗传标记；DNA 证据；证明力；同一认定；司法鉴定

【中图分类号】 D915.13

【文献标识码】 A

【文章编号】 1674-1226（2012）06-0737-13

Influence of Genetic Marker Analysis on DNA Evidence. Yuan Li. Lecturer of the Key Laboratory for Evidence Science，CUPL 100088.

【Abstract】 With substantial theoretical foundation, developed operating technology, and highly automated detecting instruments, DNA analysis techniques are able to do the identification，and possessed with high degree of scientificalness , reliability, and accuracy compared with other evidence technology. It definitely is the best in the scientific evidence. However, DNA evidence is restricted by a variety of factors in proving the facts of case, including the selection of genetic marks. The same biological evidence, due to the use of different types of genetic marks and different size of the recognition system, leads to the different interpretations of the results, thus making the probative force of DNA evidence quite different.

【Key Words】 Genetic marker, DNA evidence, Probative force, Identification, Forensic appraisal