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Nakagawa T, Doi M, Nishi K, Sugahara T. Cross-species amplification from non-human primate DNAs in commercial human DNA assay kits. Leg Med (Tokyo) 2024; 68:102369. [PMID: 38325235 DOI: 10.1016/j.legalmed.2023.102369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 10/04/2023] [Accepted: 11/23/2023] [Indexed: 02/09/2024]
Abstract
Species specificity of commercial human DNA quantification kits and short tandem repeat (STR) profiling kits was examined using primate DNA samples. These samples comprised 33 individuals from eight primate species, each with gender and kinship data, including human (Homo sapiens), chimpanzee (Pan troglodytes), gorilla (Gorilla gorilla), and orangutan (Pongo pygmaeus) of Hominidae family, and Japanese macaque (Macaca fuscata), long-tailed macaque (Macaca fascicularis), hamadryas baboon (Papio hamadryas), and savannah monkey (Chlorocebus sp.) of Cercopithecidae family. The findings revealed varying levels of cross-species amplifications in all non-human DNA samples that correlated with their evolutionary proximity to humans, both kit types. Moreover, cross-species amplification, including female DNA samples, was observed in a Y-chromosomal STR profiling kit. Additionally, species specificity differed among the commercial kits examined. The cross-species amplification data presented in this study offer valuable assistance in interpreting the results of individual human identification in forensic cases involving non-human primates.
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Affiliation(s)
- Toshifumi Nakagawa
- Forensic Science Laboratory, Ehime Prefectural Police Headquarters, 2-2 Minamihoribatacho, Matsuyama, Ehime 790-8573, Japan.
| | - Masanori Doi
- Forensic Science Laboratory, Ehime Prefectural Police Headquarters, 2-2 Minamihoribatacho, Matsuyama, Ehime 790-8573, Japan
| | - Kosuke Nishi
- Department of Bioscience, Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan; Food and Health Sciences Research Center, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Takuya Sugahara
- Department of Bioscience, Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan; Food and Health Sciences Research Center, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
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2
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Panneerchelvam S, Norazmi MN. DNA Profiling in Human Identification: From Past to Present. Malays J Med Sci 2023; 30:5-21. [PMID: 38239252 PMCID: PMC10793127 DOI: 10.21315/mjms2023.30.6.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 12/02/2022] [Indexed: 01/22/2024] Open
Abstract
Forensic DNA typing has been widely accepted in the courts all over the world. This is because DNA profiling is a very powerful tool to identify individuals on the basis of their unique genetic makeup. DNA evidence is capable of not only identifying the presence of specific biospecimens in a crime scene, but it is also used to exonerate suspects who are innocent of a crime. Technological advancements in DNA profiling, including the development of validated kits and statistical methods have made this tool to be more precise in forensic investigations. Therefore, validated combined DNA index system (CODIS) short tandem repeats (STRs) kits which require very small amount of DNA, coupled with real-time polymerase chain reaction (PCR) and the statistical strengths are used routinely to identify human remains, establish paternity or to match suspected crime scene biospecimens. The road to modern DNA profiling has been long, and it has taken scientists decades of work and fine tuning to develop highly accurate testing and analyses that are used today. This review will discuss the various DNA polymorphisms and their utility in human identity testing.
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Affiliation(s)
| | - Mohd Nor Norazmi
- School of Health Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
- Malaysia Genome and Vaccine Institute, National Institutes of Biotechnology Malaysia, Selangor, Malaysia
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3
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27 Y-chromosomal STR haplotypic structure for the Chinese Han population from Changchun, Northeastern China. Leg Med (Tokyo) 2020; 48:101813. [PMID: 33264698 DOI: 10.1016/j.legalmed.2020.101813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/11/2020] [Accepted: 11/12/2020] [Indexed: 11/23/2022]
Abstract
Y- Changchun is the capital and largest city of Jilin Province in the northeast China. In this study, we genotyped and investigated haplotypes of 27 Y-STR loci in 1037 Changchun Han male individuals using commercially available AmpFlSTR Yfiler® Plus kit. We calculated the Gene diversity (GD) values and haplotype diversity (HD) as important forensic parameters. Furthermore, we observed genetic affinities between Changchun Han with other Northern Han Chinese populations and also Korans in Yanbian in the Multidimensional scaling and phylogenetic tree analysis.
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Wang CZ, Su MJ, Li Y, Chen L, Jin X, Wen SQ, Tan J, Shi MS, Li H. Genetic polymorphisms of 27 Yfiler® Plus loci in the Daur and Mongolian ethnic minorities from Hulunbuir of Inner Mongolia Autonomous Region, China. Forensic Sci Int Genet 2019; 40:e252-e255. [DOI: 10.1016/j.fsigen.2019.02.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 01/22/2019] [Accepted: 02/03/2019] [Indexed: 11/28/2022]
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Zhang S, Han S, Zhang M, Wang Y. Non-invasive prenatal paternity testing using cell-free fetal DNA from maternal plasma: DNA isolation and genetic marker studies. Leg Med (Tokyo) 2018; 32:98-103. [PMID: 29626747 DOI: 10.1016/j.legalmed.2018.03.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 03/01/2018] [Accepted: 03/31/2018] [Indexed: 12/13/2022]
Abstract
Invasive prenatal paternity tests can result in miscarriage and congenital malformations; therefore, a non-invasive method of testing is preferable. However, little progress could be made in this field until the introduction of cell-free fetal DNA (cffDNA) in 2009. In this review, two aspects regarding the history and development of non-invasive prenatal paternity testing (NIPAT) are summarized: (1) extraction and enrichment of cffDNA and (2) genetic marker-based studies. Although column-based kits are used widely for NIPAT, some researchers have suggested that an automated method, such as magnetic extraction, generally has a higher cffDNA yield than that of manual column-based extraction; therefore, its popularity might increase in the near future. In addition, size- and methylation-based enrichment methods are expected to perform better than formaldehyde-based methods. On the other hand, single nucleotide polymorphism-based techniques have contributed to NIPAT, whereas the application of short tandem repeat testing has so far been restricted to pregnant women bearing male fetuses only. Additional methods and techniques are expected to be innovated to facilitate the forensic practice of NIPAT.
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Affiliation(s)
- Shanshan Zhang
- Medical Research & Laboratory Diagnostic Center, Jinan Central Hospital Affiliated to Shandong University, No. 105 Jiefang Road, Jinan, Shandong 250013, PR China
| | - Shuyi Han
- Medical Research & Laboratory Diagnostic Center, Jinan Central Hospital Affiliated to Shandong University, No. 105 Jiefang Road, Jinan, Shandong 250013, PR China.
| | - Maoxiu Zhang
- Medical Research & Laboratory Diagnostic Center, Jinan Central Hospital Affiliated to Shandong University, No. 105 Jiefang Road, Jinan, Shandong 250013, PR China
| | - Yunshan Wang
- Medical Research & Laboratory Diagnostic Center, Jinan Central Hospital Affiliated to Shandong University, No. 105 Jiefang Road, Jinan, Shandong 250013, PR China.
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6
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Spólnicka M, Dąbrowska J, Szabłowska-Gnap E, Pałeczka A, Jabłońska M, Zbieć-Piekarska R, Pięta A, Boroń M, Konarzewska M, Kostrzewa G, Płoski R, Rogalla U, Woźniak M, Grzybowski T. Intra- and inter-population analysis of haplotype diversity in Yfiler ® Plus system using a wide set of representative data from Polish population. Forensic Sci Int Genet 2017; 28:e22-e25. [DOI: 10.1016/j.fsigen.2017.01.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 01/23/2017] [Accepted: 01/24/2017] [Indexed: 11/28/2022]
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7
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Casey DG, Domijan K, MacNeill S, Rizet D, O'Connell D, Ryan J. The Persistence of Sperm and the Development of Time Since Intercourse (TSI) Guidelines in Sexual Assault Cases at Forensic Science Ireland, Dublin, Ireland. J Forensic Sci 2016; 62:585-592. [DOI: 10.1111/1556-4029.13325] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 04/28/2016] [Accepted: 08/07/2016] [Indexed: 12/01/2022]
Affiliation(s)
- David G. Casey
- Department of Justice and Equality; Forensic Science Ireland; Garda Headquarters Phoenix Park Dublin 8 Ireland
| | - Katarina Domijan
- Department of Mathematics and Statistics; Maynooth University; Co. Kildare Ireland
| | - Sarah MacNeill
- Department of Justice and Equality; Forensic Science Ireland; Garda Headquarters Phoenix Park Dublin 8 Ireland
| | - Damien Rizet
- Department of Justice and Equality; Forensic Science Ireland; Garda Headquarters Phoenix Park Dublin 8 Ireland
| | - Declan O'Connell
- Department of Justice and Equality; Forensic Science Ireland; Garda Headquarters Phoenix Park Dublin 8 Ireland
| | - Jennifer Ryan
- Department of Justice and Equality; Forensic Science Ireland; Garda Headquarters Phoenix Park Dublin 8 Ireland
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Hanson EK, Ballantyne J. Enhanced DNA Profiling of the Semen Donor in Late Reported Sexual Assaults: Use of Y-Chromosome-Targeted Pre-amplification and Next Generation Y-STR Amplification Systems. Methods Mol Biol 2016; 1420:185-200. [PMID: 27259741 DOI: 10.1007/978-1-4939-3597-0_15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In some cases of sexual assault the victim may not report the assault for several days after the incident due to various factors. The ability to obtain an autosomal STR profile of the semen donor from a living victim rapidly diminishes as the post-coital interval is extended due to the presence of only a small amount of male DNA amidst an overwhelming amount of female DNA. Previously, we have utilized various technological tools to overcome the limitations of male DNA profiling in extended interval post-coital samples including the use of Y-chromosome STR profiling, cervical sample, and post-PCR purification permitting the recovery of Y-STR profiles of the male DNA from samples collected 5-6 days after intercourse. Despite this success, the reproductive biology literature reports the presence of spermatozoa in the human cervix up to 7-10 days post-coitus. Therefore, novel and improved methods for recovery of male profiles in extended interval post-coital samples were required. Here, we describe enhanced strategies, including Y-chromosome-targeted pre-amplification and next generation Y-STR amplification kits, that have resulted in the ability to obtain probative male profiles from samples collected 6-9 days after intercourse.
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Affiliation(s)
- Erin K Hanson
- National Center for Forensic Science, 162367, Orlando, FL, 32816-2367, USA
| | - Jack Ballantyne
- National Center for Forensic Science, 162367, Orlando, FL, 32816-2367, USA.
- Department of Chemistry, University of Central Florida, 162366, Orlando, FL, 32816-2366, USA.
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9
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Barra GB, Santa Rita TH, Chianca CF, Velasco LFR, de Sousa CF, Nery LFA, Costa SSS. Fetal male lineage determination by analysis of Y-chromosome STR haplotype in maternal plasma. Forensic Sci Int Genet 2014; 15:105-10. [PMID: 25434746 DOI: 10.1016/j.fsigen.2014.11.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 11/03/2014] [Accepted: 11/06/2014] [Indexed: 01/26/2023]
Abstract
The aim of this study is to determine the fetus Y-STR haplotype in maternal plasma during pregnancy and estimate, non-invasively, if the alleged father and fetus belong to the same male lineage. The study enrolled couples with singleton pregnancies and known paternity. All participants signed informed consent and the local ethics committee approved the study. Peripheral blood was collected in EDTA tubes (mother) and in FTA paper (father). Maternal plasma DNA was extracted by using NucliSens EasyMAG. Fetal gender was determined by qPCR targeting DYS-14 in maternal plasma and it was also confirmed after the delivery. From all included volunteers, the first consecutive 20 mothers bearing male fetuses and 10 mothers bearing female fetuses were selected for the Y-STR analysis. The median gestational age was 12 weeks (range 12-36). All DNA samples were subjected to PCR amplification by PowerPlex Y23, ampFLSTR Yfiler, and two in-house multiplexes, which together accounts for 27 different Y-STR. The PCR products were detected with 3500 Genetic Analyzer and they were analyzed using GeneMapper-IDX. Fetuses' haplotypes (Yfiler format) were compared to other 5328 Brazilian haplotypes available on Y-chromosome haplotypes reference database (YHRD). As a result, between 22 and 27 loci were successfully amplified from maternal plasma in all 20 cases of male fetuses. None of the women bearing female fetuses had a falsely amplified Y-STR haplotype. The haplotype detected in maternal plasma completely matched the alleged father haplotype in 16 out of the 20 cases. Four cases showed single mismatches and they did not configure exclusions; 1 case showed a mutation in the DYS 458 locus due to the loss of one repeat unit and 3 cases showed one DYS 385I/II locus dropout. All mismatches were confirmed after the delivery. Seventeen fetuses' haplotypes were not found in YHRD and one of them had a mutation, which corresponded to the paternity probability of 99.9812% and 95.7028%, respectively. Three fetuses' haplotypes occurred twice in YHRD, which corresponded to paternity probability of 99.9437%. In conclusion, high discriminatory fetal Y-STR haplotype could be determined from maternal plasma during pregnancy starting at 12 weeks of gestation. All male fetuses could be attributed to the alleged father male lineage early in pregnancy. The high probability of paternity associated with each case suggests that the relationship is not random and this strategy can be use as an alternative for male fetal kinship analysis.
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Affiliation(s)
- Gustavo Barcelos Barra
- Sabin Laboratory of Clinical Analysis, Brasilia, Federal District, Brazil; Post-Graduation in Health Sciences, University of Brasilia, Brasilia, Federal District, Brazil.
| | - Ticiane Henriques Santa Rita
- Sabin Laboratory of Clinical Analysis, Brasilia, Federal District, Brazil; Post-Graduation in Health Sciences, University of Brasilia, Brasilia, Federal District, Brazil
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10
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LI YATING, XIE MINGKUN, WU JIN. DNA profiling in peripheral blood, buccal swabs, hair follicles and semen from a patient following allogeneic hematopoietic stem cells transplantation. Biomed Rep 2014; 2:804-808. [PMID: 25279149 PMCID: PMC4179770 DOI: 10.3892/br.2014.332] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 07/31/2014] [Indexed: 01/15/2023] Open
Abstract
Allogeneic peripheral blood stem cells transplantation (allo-PBSCT) or allogeneic bone marrow transplantation (allo-BMT) have been widely used to treat patients exhibiting certain severe illnesses. However, previous studies have shown that the biological materials of allo-PBSCT or allo-BMT recipients may not constitute credible materials for personal identification. In the present study, four types of commonly used samples were collected from a male individual following gender-matched allo-BMT. Autosomal short tandem repeat (STR) and Y-STR markers analysis, based on polymerase chain reaction, were used to evaluate the chimerism status. The results showed that the blood sample were all donor type, the buccal swab sample were mixed chimerism, and the sperm and hair follicle samples maintained a recipient origin of 100%. In conclusion, identical results were obtained by the two methods and it was confirmed that DNA extracted from hair follicles and sperm can be used as a reference for the pre-transplant genotype DNA profile of the recipient in the gender-match allo-BMT or -PBSCT.
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Affiliation(s)
- YA-TING LI
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - MING-KUN XIE
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - JIN WU
- Department of Forensic Genetics, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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11
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Enhancing the sexual assault workflow: Testing of next generation DNA assessment and Y-STR systems. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2013. [DOI: 10.1016/j.fsigss.2013.10.117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Empirical evaluation reveals best fit of a logistic mutation model for human Y-chromosomal microsatellites. Genetics 2011; 189:1403-11. [PMID: 21968190 DOI: 10.1534/genetics.111.132308] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The rate of microsatellite mutation is dependent upon both the allele length and the repeat motif, but the exact nature of this relationship is still unknown. We analyzed data on the inheritance of human Y-chromosomal microsatellites in father-son duos, taken from 24 published reports and comprising 15,285 directly observable meioses. At the six microsatellites analyzed (DYS19, DYS389I, DYS390, DYS391, DYS392, and DYS393), a total of 162 mutations were observed. For each locus, we employed a maximum-likelihood approach to evaluate one of several single-step mutation models on the basis of the data. For five of the six loci considered, a novel logistic mutation model was found to provide the best fit according to Akaike's information criterion. This implies that the mutation probability at the loci increases (nonlinearly) with allele length at a rate that differs between upward and downward mutations. For DYS392, the best fit was provided by a linear model in which upward and downward mutation probabilities increase equally with allele length. This is the first study to empirically compare different microsatellite mutation models in a locus-specific fashion.
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13
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Donor-derived DNA in hair follicles of recipients after allogeneic hematopoietic stem cell transplantation. Bone Marrow Transplant 2010; 45:1638-44. [DOI: 10.1038/bmt.2010.27] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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14
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Tsutsumi H, Komuro T, Mukoyama R, Izawa H, Tie J, Uchigasaki S. A case of personal identification due to detection of rare DNA types from seminal stain. J Oral Sci 2009; 51:645-50. [PMID: 20032621 DOI: 10.2334/josnusd.51.645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Following a rape incident in an apartment in Japan, we were requested to perform a DNA analysis on a body fluid stain left on a bath towel to determine whether it could be attributed to the suspect. The acid phosphatase and prostatic-specific antigen tests confirmed it to be a seminal stain. Based on the DNA analysis by autosomal and Y-chromosome short tandem repeat (STR) systems, no inconsistency was found with the profile of the suspect with African ancestry. In this case, allele 21 of DYS390 at the Y-STR locus was examined, as it is reported to have a distinctly lower frequency in the Japanese population. Furthermore, the haplotype combinations of Y-STR at the DYS389I, DYS389II and DYS390 loci are powerful for personal identification, as these have not yet been found in the Japanese population.
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Affiliation(s)
- Hirofumi Tsutsumi
- Department of Legal Medicine, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan.
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15
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BEJA‐PEREIRA ALBANO, OLIVEIRA RITA, ALVES PAULOC, SCHWARTZ MICHAELK, LUIKART GORDON. Advancing ecological understandings through technological transformations in noninvasive genetics. Mol Ecol Resour 2009; 9:1279-301. [DOI: 10.1111/j.1755-0998.2009.02699.x] [Citation(s) in RCA: 258] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- ALBANO BEJA‐PEREIRA
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485‐661 Vairão, Portugal
| | - RITA OLIVEIRA
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485‐661 Vairão, Portugal
- Departamento de Zoologia e Antropologia, Faculdade de Ciências da Universidade do Porto, Rua Campo Alegre s/n, 4169‐007 Porto, Portugal
| | - PAULO C. ALVES
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485‐661 Vairão, Portugal
- Departamento de Zoologia e Antropologia, Faculdade de Ciências da Universidade do Porto, Rua Campo Alegre s/n, 4169‐007 Porto, Portugal
| | - MICHAEL K. SCHWARTZ
- USDA Forest Service, Rocky Mountain Research Station, Missoula, MT 59801, USA
| | - GORDON LUIKART
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485‐661 Vairão, Portugal
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA
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16
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Affiliation(s)
- T. A. Brettell
- Department of Chemical and Physical Sciences, Cedar Crest College, 100 College Drive, Allentown, Pennsylvania 18104-6196
| | - J. M. Butler
- Biochemical Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8312
| | - J. R. Almirall
- Department of Chemistry and Biochemistry and International Forensic Research Institute, Florida International University, University Park, Miami, Florida 33199
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Malsom S, Flanagan N, McAlister C, Dixon L. The prevalence of mixed DNA profiles in fingernail samples taken from couples who co-habit using autosomal and Y-STRs. Forensic Sci Int Genet 2009; 3:57-62. [DOI: 10.1016/j.fsigen.2008.09.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2008] [Revised: 06/27/2008] [Accepted: 09/18/2008] [Indexed: 11/24/2022]
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18
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The effect of number of loci on geographical structuring and forensic applicability of Y-STR data in Finland. Int J Legal Med 2008; 122:449-56. [PMID: 18548267 DOI: 10.1007/s00414-008-0250-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2007] [Accepted: 04/17/2008] [Indexed: 10/22/2022]
Abstract
The Y-chromosomal diversity among Finnish males is characterized by low diversity and substantial geographical substructuring. In a 12-locus data set (PowerPlexY), especially the eastern parts of the country showed low levels of variation, and the western, middle, and eastern parts of Finland differed from each other by their Y-short tandem repeat (STR) haplotype frequencies (Palo et al., Forensic Sci Int Genet 1:120-124, 2007). In this paper, we have analyzed geographical patterns of Y-STR diversity using both 12-locus (PowerPlexY) and 17-locus (Yfiler) data sets from the same set of geographically structured samples. In the larger data set, the haplotype diversity is significantly higher, as expected. The geographical distribution of haplotypes is similar in both data sets, but the level of interregional differences is significantly lower in the Yfiler data. The implications of these observations on the forensic casework are discussed.
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Mayntz-Press KA, Sims LM, Hall A, Ballantyne J. Y-STR Profiling in Extended Interval (≥3 days) Postcoital Cervicovaginal Samples. J Forensic Sci 2008; 53:342-8. [DOI: 10.1111/j.1556-4029.2008.00672.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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