首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1篇
  免费   0篇
  国内免费   1篇
特种医学   1篇
综合类   1篇
  2022年   1篇
  2020年   1篇
排序方式: 共有2条查询结果,搜索用时 15 毫秒
1
1.
法医DNA在刑事侦查中发挥不可替代的作用,面对日益复杂的作案方式,法医DNA面临多重挑战,寻找有效的新型法医DNA遗传标记具有重要的应用价值和科学意义。微单倍型(microhaplotype)是一种新型法医遗传标记,它是长度较短、包含2个以上单核苷酸多态性(single nucleotide polymorphism,SNP)位点的多态性基因座,兼有短串联重复序列(short tandem repeat,STR)和SNP的优点,具备较高多态性和极低突变率。最新研究发现其在祖源推断、个人识别、亲权鉴定等方面具有独特优势,尤其是在混合DNA分析、降解或微量检材检测中具备巨大潜力。文章对微单倍型的概念、特点、研究进展、挑战及展望等进行介绍,希望其将来在法医学应用中发挥更大的作用。  相似文献   
2.
Microhaplotypes are forensic genetic markers that combine single nucleotide polymorphisms in close proximity to one another. Highly discriminative microhaplotype markers could be superior to short tandem repeats (STRs) in DNA mixture deconvolution investigations because they are not interfered by stutters. In this study, the effective number of alleles (Ae) and discrimination power values of microhaplotypes and STRs were compared. It was found that current microhaplotypes are not as discriminative as commonly used forensic STRs. Effective screening of highly discriminative microhaplotype markers were consequently conducted for East Asian populations. To satisfy different forensic application needs, four sets of microhaplotypes with Ae values ≥ 4 were screened for under different conditions that included marker length and physical distances between markers. While the four sets contained 703, 301, 337, and 190 microhaplotypes, their average Ae values reached 5.38, 6.30, 7.39, and 5.61, respectively. The microhaplotype group containing 301 markers (maximum length of 200 bp and separated by ≥ 5 million bases) was further investigated. The results showed that none of the 301 loci were exactly the same as those previously reported, while seven loci partially overlapped with known markers. While Ae values of 45 loci were ≥ 8, the Ae value of the mh17WL-008 locus reached a maximum of 93.57. Further analysis showed that the newly identified microhaplotype markers were also highly polymorphic in African, American, European, and South Asian populations.  相似文献   
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号