ABSTRACT
During every criminal investigation, it is vital to extract as much information as possible from every piece of evidence. When it comes to DNA testing, simple short tandem repeat (STR) typing may soon become a relic because it is now possible to genotype more characteristics. Ancestry informative markers are receiving attention from the forensic community because individuals can be assigned to their population or territory of origin based on their analysis. Many panels of this kind have been proposed so far, yet most of them require typing of a large number of loci. In many cases it is crucial to pick a minimal set of the most informative markers due to the limited amount of material available for analysis. In this study, we demonstrate that 14 carefully picked SNPs combined in two multiplex assays are capable of fast, robust and cost effective three-way differentiation of East Asians, Europeans and Africans.
Subject(s)
Asian People/genetics , Black People/genetics , Polymorphism, Single Nucleotide , White People/genetics , HumansABSTRACT
This paper presents the allele frequencies and forensic parameters of the three miniSTR loci D10S1248, D14S1434 and D22S1045 in the Pomerania-Kujawy region of Poland. Genomic DNA was extracted by a standard phenol-chloroform extraction procedure. The three miniSTR loci D10S1248, D14S1434 and D22S1045 were amplified in a triplex polymerase chain reaction with the primer sets designed by Coble and Butler in a GeneAmp PCR System 9700 (Applied Biosystems). The amplified products were separated and detected by capillary electrophoresis on an ABI PRISM 3100 Genetic Analyzer (Applied Biosystems).The genotype frequency distributions showed no deviations from Hardy-Weinberg equilibrium expectations. The values of forensic parameters confirm that D10S1248 and D22S1045 are highly informative genetic markers, whereas D14S1434 is a moderately useful for forensic genetic identification purposes.
