13 SNP sites multiple colour fluorescent composite amplification reagent kit used for personal recognition

Abstract

The present invention relates to a disposable multicolor fluorescent multiplex amplification kit with the 13 SNP gene loci with relative high identification capacity, which is used in vitro. The utility model consists of primer mixture which is packaged separately, DNA polymerase, buffer solution, quality-control DNA sample and standard allelic ladder mixture. The primer mixture consists of 13 sharing primers labeled by fluorescence and 26 specific primers aiming at the allelic genes with different lengths. With the kit of the present invention, a genotype with 13 SNP sites with relatively high discriminating capacity can be quickly and accurately gained; the highly automation level can be achieved by using an automatic fluorescent sequencing meter to test and ladder. The kit of the present invention has great advantage and potential in medical jurisprudence identification.

Description

technical field [0001] The invention relates to a kit for in vitro one-time composite amplification of 13 SNP gene loci for personal identification, which belongs to the invention in the field of forensic personal identification. Background technique [0002] In 1996, E. Lander of the United States first proposed "single nucleotide polymorphism" (single nucleotide polymorphism, SNP), which is called "the third generation genetic marker". SNP refers to a DNA sequence polymorphism caused by a single nucleotide variation at the chromosome genome level, and the frequency of the least one allele in the population is not less than 1%. It includes single-base conversions, transversions, insertions, and deletions. SNP has the following characteristics: First, SNP sites are very abundant. Distributed almost throughout the genome, there is approximately 1 SNP every 1000 bp in the genome, and the total number is about 3 million. Secondly, the mutation rate of SNP is low, the mutatio...

AI Technical Summary

Problems solved by technology

However, since the obtained result is only a single color, the number of sites in the multiplex amplification kit should not be too many. Generally, the number of sites for one multiplex amplification cannot exceed 4, otherwise the amplification products of different sites will overlap with each other. Difficult to distinguish genotypes of specimens

In addition, the obtained results are observed with the naked eye, so its sensitivity is limited

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