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Genetic differentiation between and within Northern Native American language groups:an argument for the expansion of the Native American CODIS database

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Forensic Sciences Research 2022年第4期7卷 662-672页

作者： Jessica A.Weise Jillian Ng Robert F.Oldt Joy Viray Kelly L.McCulloh David Glenn Smith sreetharan kanthaswamy Forensic Science Graduate Program University of CaliforniaDavisCAUSA Molecular Anthropology Laboratory Department of AnthropologyUniversity of CaliforniaDavisCAUSA School of Mathematical and Natural Sciences Arizona State UniversityGlendaleAZUSA Sacramento County District Attorney’s Crime Laboratory SacramentoCAUSA California National Primate Research Center University of CaliforniaDavisCAUSA

The National Research Council recommends that genetic differentiation among subgroups of ethnic samples be lower than 3%of the total genetic differentiation within the ethnic sample to be used for estimating reliable random match probabilities for forensic *** American samples in the United States’Combined DNA Index System(CODIS)database represent four language families:Algonquian,Na-Dene,Eskimo-Aleut,and ***,a minimum of 27 Native American language families exists in the US,not including language *** goal was to ascertain whether genetic differences are correlated with language groupings and,if so,whether additional language families would provide a more accurate representation of current genetic diversity among tribal *** 21 short tandem repeat(STR)loci included in the Globalfiler^(■)PCR Amplification Kit were used to characterize six indigenous language families,including three of the four represented in the CODIS database(***,Na-Dene,and Eskimo-Aleut),and two language isolates(Miwok and Seri)using major population genetic diversity metrics such as F statistics and Bayesian clustering analysis of genotype *** of the genetic variation(97%)was found to be within language families instead of among them(3%).In contrast,when only the three of the four language families represented in both the CODIS database and the present study were considered,4%of the genetic variation occurred among the language *** clustering resulted in a maximum posterior probability indicating three genetically distinct groups among the eight language families and isolates:(1)Eskimo,(2)Seri,and(3)all other language groups and isolates,thus confirming genetic subdivision among subgroups of the CODIS Native American *** genetic structure indicates the need for an increased number of Native American populations based on language affiliation in the CODIS database as well as more robust sample sets for those langu

关键词： Forensic sciences population genetics Native Americans North America languages short tandem repeats(STRs or microsatellites)

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An inter-laboratory study of DNA-based identity,parentage and species testing in animal forensic genetics

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Forensic Sciences Research 2022年第4期7卷 708-713页

作者： sreetharan kanthaswamy Torsten Brendel Luis Cancela Denise A.Andrade de Oliveira Bertram Brenig Carmen Cons Julian A.Crespi Markéta Dajbychová Andreas Feldl Tomohito Itoh Vincenzo Landi Amparo Martinez Malgorzata Natonek-Wisniewska Robert F.Oldt Anna Radko Oscar Ramírez Clementina Rodellar Manuel Ruiz-Girón David Schikorski María Elena Turba Guillermo Giovambatista School of Mathematics and Natural Sciences Arizona State University(ASU)at the West CampusGlendaleAZUSA California National Primate Research Center University of CaliforniaDavisCAUSA Evolutionary Biology Graduate Program School of Life SciencesArizona State UniversityTempeAZUSA Eurofins Genomics Europe Applied Genomics GmbH EbersbergGermany IDENTITAS MontevideoUruguay Laboratório de Genética Escola de Veterinária da UFMGBelo HorizonteBrazil Institute of Veterinary Medicine University of GoettingenGoettingenGermany Facultad de Veterinaria Laboratorio de Genética Bioquímica(LAGENBIO)Instituto Agroalimentario de Aragón-IA2(Universidad de Zaragoza-CITA)ZaragozaSpain Facultad de Ciencias Veterinarias UNLP IGEVET-Instituto de Genética Veterinaria(UNLP-CONICET LAPLATA)La PlataArgentina Genomia s.r.o. PlzeňCzech Republic Maebashi Institute of Animal Science Livestock Improvement Association of Japan(LIAJ)MaebashiJapan Department of Veterinary Medicine Animal Breeding and GeneticsUniversity of Bari“Aldo Moro”ValenzanoItaly Department of Genetics Faculty of Veterinary SciencesUniversity of CórdobaCórdobaSpain Department of Animal Molecular Biology National Research Institute of Animal ProductionBalicePoland Vetgenomics SL BarcelonaSpain Laboratorio de Biología Molecular y Genómica Hispalis Biolab S.L.U.SevilleSpain Laboratoire LABOFARM-GENINDEXE LOUDEACCedexFrance Genefast SRL ForlìItaly

The probative value of animal forensic genetic evidence relies on laboratory accuracy and ***-laboratory comparisons allow laboratories to evaluate their performance on specific tests and analyses and to continue to monitor their *** International Society for Animal Genetics(ISAG)administered animal forensic comparison tests(AFCTs)in 2016 and 2018 to assess the limitations and capabilities of laboratories offering forensic identification,parentage and species determination *** AFCTs revealed that analyses of low DNA template concentrations(≤300 pg/μL)constitute a significant challenge that has prevented many laboratories from reporting correct identification and parentage ***,a lack of familiarity with species testing protocols,interpretation guidelines and representative databases prevented over a quarter of the participating laboratories from submitting correct species determination *** laboratories showed improvement in their genotyping accuracy over ***,the use of forensically validated standards,such as a standard forensic short tandem repeat(STR)kit,preferably with an allelic ladder,and stricter guidelines for STR typing,may have prevented some common issues from occurring,such as genotyping inaccuracies,missing data,elevated stutter products and loading *** AFCTs underscore the importance of conducting routine forensic comparison tests to allow laboratories to compare results from each *** should keep improving their scientific and technical capabilities and continuously evaluate their personnel’s proficiency in critical techniques such as low copy number(LCN)analysis and species *** this is the first time that the ISAG has conducted comparison tests for forensic testing,findings from these AFCTs may serve as the foundation for continuous improvements of the overall quality of animal forensic genetic testing.

关键词： Forensic sciences forensic genetics comparison test forensic DNA analysis individual identification parentage test species test

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