scholarly journals Sibling Indices as Comparisons in Personal Identification Process through Short Tandem Repeats [STR] Loci CSF1PO, THOI, TPOX, vWA of Maduranese Ethnic in Surabaya

2021 ◽  
Vol 6 (2) ◽  
pp. 60318
Author(s):  
Ahmad Yudianto ◽  
Fery Setiawan ◽  
Simon Martin Manyanza Nzilibili

Sibling indices can be used as a comparison through alleles Short Tandem Repeats [STR] loci. This is an observational study among Maduranese with 4 STR loci (CSF1PO, THOI, TPOX, vWA) obtained from their blood samples. The percentage of alleles shared: 82.5% [33 times] with 2 allele sharing, 12.5% [5 times] with 1 allele sharing, and 5 % [2 times] with 0 sharing alleles. Sibling indices (SI) calculation results: 65% of sibling indices pairs have SI greater than 100 and 15% of them were between 10-100 (strong and very strong). Sibling indices interpretation is supported; therefore, the claimed sibling indices relationships were indeed true among Maduranese ethnic group in Surabaya.

2013 ◽  
Vol 1 (1) ◽  
Author(s):  
Johannis Mallo

Abstrak: Mayat seorang perempuan tak dikenal yang ditemukan di daerah Malalayang dibawa oleh polisi ke Rumah Sakit Umum Pusat Prof.dr.R.D Kandou. Mayat tersebut telah mengalami proses awal pembusukan. Selain itu pihak kepolisian mengalami kesulitan untuk menentukan identitas mayat tersebut serta menemukan keluarganya. Demi pengungkapan kejadian yang menyebabkan kematian perempuan tak dikenal ini, terlebih dahulu polisi harus dapat menentukan identitas mayat. Melalui data medis yang dikumpulkan dari proses autopsi forensik, digabungkan dengan daftar orang hilang yang dibuat oleh kantor kepolisian Sektor Malalayang dan Kepolisian Kota Besar Manado, ditemukan kecocokan data yang merujuk pada seorang perempuan yang dilaporkan hilang oleh keluarganya. Polisi kemudian meminta pemeriksaan identifikasi melalui metode analisis DNA untuk membandingkan DNA mayat dengan DNA individu-individu yang mengaku sebagai keluarga korban. Pada saat autopsi forensik, diambil sampel tulang padat iga kanan dan kiri sepanjang 10 cm dari mayat. Sebagai pembanding diambil apusan mukosa pipi dan 2 cc darah tepi dari individu-individu yang diduga ayah dan adik kandung dari mayat yang ditemukan. Proses ekstraksi, kuantifikasi, PCR, dan proses analisis akan dilakukan di Pusat Laboratorium Forensik Kepolisian Republik Indonesia. Kata kunci: identitas mayat, identifikasi DNA, PCR, STR.     Abstract: Ms X’s corpse was brought to Prof.R.D Kandou general hospital by police officers. Ms X was found in Malalayang without any identity attached to her body. Her body had begun to decompose, and the police had difficulties in finding Ms X’s relatives. In order to uncover the case behind Ms X’s death, the police had to first discover the true identity of Ms X. Medical data was acquired during an autopsy, and from a list that the police made, a match was found in a report of missing persons when two data were compared. The Police requested a paternity DNA examination in order to have a positive identification of Ms X. During the forensic autopsy of Ms X, 10 cm of left and right costal compact bones were obtained. Buccal swabs were made and 2 cc of peripheral blood were taken, each from the suspected father and a suspected sister of Ms X. Extraction, quantification, PCR, and the analysis was made at Pusat Laboratorium Forensik Kepolisian Republik Indonesia the main Police Forensic Laboratory of Indonesia. PCR involves 13 to 15 of nuclear STR loci, and the analyzing process of the samples involves comparing the 13 to 15 nuclear STR loci of the 3 people. If a match is found with 99% accuracy, then identification is verified. The Paternity Index indicates the greatest possibility that the suspected father is the real father of Ms X, compared to other males in the Asian / Indonesian Population.1 Keywords: corpse identity,  DNA identification, PCR, STR.


2019 ◽  
Vol 20 (2) ◽  
pp. 75-86
Author(s):  
Katarina Vitoševic ◽  
Danijela Todorovic ◽  
Zivana Slovic ◽  
Radica Zivkovic-Zaric ◽  
Milos Todorovic

Abstract Forensic genetics represents a combination of molecular and population genetics. Personal identification and kinship analysis (e.g. paternity testing) are the two main subjects of forensic DNA analysis. Biological specimens from which DNA is isolated are blood, semen, saliva, tissues, bones, teeth, hairs. Genotyping has become a basis in the characterization of forensic biological evidence. It is performed using a variety of genetic markers, which are divided into two large groups: bi-allelic (single-nucleotide polymorphisms, SNP) and multi-allelic polymorphisms (variable number of tandem repeats, VNTR and short tandem repeats, STR). This review describes the purpose of genetic markers in forensic investigation and their limitations. The STR loci are currently the most informative genetic markers for identity testing, but in cases without a suspect SNP can predict offender’s ancestry and phenotype traits such as skin, eyes and hair color. Nowadays, many countries worldwide have established forensic DNA databases based on autosomal short tandem repeats and other markers. In order for DNA profile database to be useful at a national or international level, it is essential to standardize genetic markers used in laboratories.


Author(s):  
Irena Vrtková ◽  
Štěpán Vrtek ◽  
Lenka Falková

The main goal of the research was to evaluate suitability of 11 tetrameric STRs (Short Tandem Repeats) marker panel for the Prestice Black-Pied pig (PC) breed as the only genetic resource in the Czech Republic.The analysis was carried out in 522 breeding and slaughter PC individuals. We observed 94 alleles overall across whole 11 STR panel. The observed heterozygosityHOwas 0.677, the polymorphism information content (PIC) was in average 0.664 per locus. The probability of identity of two independent samples (PI) using all 11 STR loci was 4.037·10−11and the probability of identity related individuals (PISibs) was 8.315·10−5. The power of exclusion for loci combinations when both parents are known (P1), when only one of the parent is known (P2) and for two putative parents (P3) were 0.9996, 0.9899 and 0.9999. The efficiency of the 11 tetrameric STRs (Animaltype Pig kit) is higher in PC in comparison to commercial breeds and slaughter crossbred pigs. In genetic resource PC, the 11 STRs panel is usable for forensic purpose such parentity testing and traceability.


2021 ◽  
Author(s):  
Cody J Steely ◽  
Scott Watkins ◽  
Lisa Baird ◽  
Lynn Jorde

Short tandem repeats (STRs) are tandemly repeated sequences of 1-6 bp motifs. STRs compose approximately 3% of the genome, and mutations at STR loci have been linked to dozens of human diseases including amyotrophic lateral sclerosis, Friedreich ataxia, Huntington disease, and fragile X syndrome. Improving our understanding of these mutations would increase our knowledge of the mutational dynamics of the genome and may uncover additional loci that contribute to disease. Here, to estimate the genome-wide pattern of mutations at STR loci, we analyzed blood-derived whole-genome sequencing data for 544 individuals from 29 three-generation CEPH pedigrees. These pedigrees contain both sets of grandparents, the parents, and an average of 9 grandchildren per family. Using HipSTR we identified de novo STR mutations in the 2nd generation of these pedigrees. Analyzing ~1.6 million STR loci, we estimate the empircal de novo STR mutation rate to be 5.24*10-5 mutations per locus per generation. We find that perfect repeats mutate ~2x more often than imperfect repeats. De novo STRs are significantly enriched in Alu elements (p < 2.2e-16). Approximately 30% of STR mutations occur within Alu elements, which compose only ~11% of the genome, and ~10% are found in LINE-1 insertions, which compose ~17% of the genome. Phasing these de novo mutations to the parent of origin shows that parental transmission biases vary among families. We estimate the average number of de novo genome-wide STR mutations per individual to be ~85, which is similar to the average number of observed de novo single nucleotide variants.


2021 ◽  
Vol 15 (12) ◽  
pp. 3299-3301
Author(s):  
Anam Iqbal ◽  
Usman Shahid Butt ◽  
Nasreen Akhtar ◽  
Riasat Ali ◽  
Tooba Ali ◽  
...  

Background: The human behavior is influenced by genetic as well as environment components. Likewise, the aggressive behavior having an intent of criminality is also governed by both environmental and genetic makeup. Aim: The genetic element has been explored by analyzing the microsatellite RS1 and RS3 of AVPRIA gene which showed strong variations in short tandem repeats (STRs) of convicted offenders when they were compared with normal population. Methods: Blood samples of 100 convicted offenders were taken and DNA was extracted using PCI protocol. The PCR was then carried out using primers and the products were send for gene sequencing. The results were compared with that of general population having no history of crime or psychological abnormality. Results: The microsatellite RS1 and RS3 of AVPRIA gene showed strong variations in short tandem repeats (STRs) of convicted offenders when they were compared with normal population. Keywords: AVPR1A, criminal intent, PCR


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