Publications by authors named "Toshi Jain"

Due to its proficiency to provide the most discriminating results for forensic applications, medical research and anthropological studies, multiplex PCR based STR analysis has been established as the most efficient technique in the forensic DNA analysis. Several multiplex amplification kits based on 4, 5 and 6 dyes chemistry are commercially available and used in forensic DNA typing across the globe. These multiplex PCR systems are routinely used for amplification of multiple STR loci (Autosomal, Y and/or X STR's) in the DNA extracted from various biological samples.

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Genotyping of highly polymorphic autosomal short tandem repeat (STR) markers is a potent tool for elucidating genetic diversity. In the present study, fifteen autosomal STR markers were analyzed in unrelated healthy male Gorkha individuals (n = 98) serving in the Indian Army by using AmpFlSTR Identifiler Plus PCR Amplification Kit. In total, 138 alleles were observed with corresponding allele frequencies ranging from 0.

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The aim of this study was to contribute new data on autosomal STR and Y-STR markers of the Majhi tribal community of Chhattisgarh, a state of central India. In order to improve available databases of forensic interest, we analyzed 15 autosomal STR markers in a population sample of 129 unrelated indigenous Majhi tribe and 23 Y-chromosomal STR markers in the 107 males of the sample. The combined power of discrimination (CPD) and combined power of exclusion (CPE) were greater than 0.

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Aim: To estimate population parameters based on allele frequencies obtained for 15 polymorphic autosomal STR loci investigated in caste and tribal populations of central India (n = 419).

Methods: Multiplexed PCR amplifications of the 15 Autosomal STR Loci were performed and amplified products were genotyped using multi-capillary electrophoresis on an ABI 3100 genetic analyser. Parameters of population genetics and forensic interest based on the allele frequencies were calculated.

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An analysis of 15 autosomal short tandem repeat (STR) loci and 17 Y-STR loci was performed in 123 unrelated members of the Oraon tribal community of Central India. The combined power of discrimination (CPD) and combined power of exclusion (CPE) were greater than 0.99999 and 0.

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The analysis of 15 autosomal STR locus (TH01, D3S1358, vWA, D21S11, TPOX, D7S820, D19S433, D5S818, D2S1338, D16S539, CSF1PO, D13S317, FGA, D18S51, D8S1179) was done in 582 healthy unrelated individuals (Male-366, Female-216) originating from the various geographical regions of Madhya Pradesh, India. All locus fall under Hardy-Weinberg equilibrium except TPOX. These STR loci were highly informative and discriminating with combined power of discrimination (CPD) >0.

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Aims: Seventeen Y-STR loci (DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS385a/b, DYS437, DYS438, DYS439, DYS448, DYS456, DYS458, DYS635 and Y-GATA-H4) were analysed in 173 males belonging to the central Indian population with the aim of studying genetic diversity and adding to the population database.

Methods: Multiplexed PCR amplifications of the 17 Y STR loci were performed using AmpFlSTR® Yfiler® Kit. Amplified products were genotyped using a multi capillary electrophoresis with POP-4 polymer in ABI Prism 3100 Genetic Analyzer.

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Aims: Genotypic polymorphism studies at 15 highly polymorphic short tandem repeat (STR) loci were carried out in Bhil tribal population of Madhya Pradesh, in central region of India.

Methods: The analysis of 15 autosomal STR loci (TH01, D3S1358, vWA, D21S11, TPOX, D7S820, D19S433, D5S818, D2S1338, D16S539, CSF1PO, D13S317, FGA, D18S51, D8S1179) was done in 183 unrelated individuals of the Bhil tribe.

Results: Heterozygosity among the studied 15 autosomal STR loci ranged from 63.

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The analysis of 12 X STR loci (DXS10103, DXS8378, DXS7132, DXS10134, DXS10074, DXS10101, DXS10135, DXS7423, DXS10146, DXS10079, HPRTB and DXS10148) belonging to four linkage group was done in 183 (100 males and 83 females) unrelated members of Bhil population. Heterozygosity among the studied 12 X STR loci showed a distribution of from 59.7% to 92.

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