Research Article

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The use of insects to answer questions in criminal investigations, as well as a combination of forensic genetic techniques to obtain human DNA from the organisms, especially necrophagous dipterians, have gained ground in recent decades among researchers and professionals in this area. The objective of our study was to evaluate and ... more

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Allele frequencies of 30 insertion/deletion polymorphism (InDel) markers previously selected and validated for forensic purposes were assessed in 419 unrelated individuals originating from five different populations of P.R. China, including Chinese Han, Chinese Hui, Uighur, Mongolians, and Tibetans. Hardy-Weinberg equilibrium tests and linkage disequilibrium analysis were performed; the ... more

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DNA genotyping; EDTA; Forensic genetics; urine

Individual identification of urinary samples is necessary when sample switching or handling are suspected during a judicial process. To improve the rate of successful genotyping of urinary samples, we examined the stability of DNA in urinary samples stored for up to 30 days. Urinary samples from 20 healthy individuals (10 males and 10 females) were stored at -80°C with different ... more

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Alleles; Amelogenin; Asian Continental Ancestry Group; China; Chromosomes, Human, X; Chromosomes, Human, Y; DNA fingerprinting; Ethnic groups; Female; Forensic genetics; Gene frequency; Genetics, Population; Haplotypes; Humans; male; Microsatellite Repeats; Paternity; Polymorphism, Genetic

The sex-linked short tandem repeats (STR), Y-STR and X-STR, are important for autosomal STRs in forensic paternity testing. We evaluated the forensic parameters of 19 Y-STRs and 16 X-STRs in the Han population of Shandong province, China. A Goldeneye 20Y kit (DYS391, DYS389I, DYS390, DYS389II, DYS348, DYS456, Y-GATA-H4, DYS447, DYS19, DYS392, DYS393, DYS388, DYS439, DYS635, DYS448, DYS460, ... more

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This study aimed to develop a short tandem repeat (STR) multiplex system, made up of 22 highly informative STR loci, for application in forensic genetics. The system comprised 21 polymorphic autosomal loci (D3S1358, TH01, D21S11, D18S51, Penta E, D5S818, D13S317, D7S820, D16S539, CSF1PO, Penta D, vWA, D8S1179, TPOX, FGA, D2S441, D17S1301, D19S433, D18S853, D20S482, and D14S1434) and the ... more

R.G. Rodovalho; E.L. Rodrigues; G.S. Santos; L.M. Cavalcanti; P.R. Lima; A.G. Rodovalho; R.G. Vital; M.A.D. Gigonzac; A.D. da Cruz
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The use of Y chromosome haplotypes, important for the detection of sexual crimes in forensics, has gained prominence with the use of databases that incorporate these genetic profiles in their system. Here, we optimized and validated an amplification protocol for Y chromosome profile retrieval in reference samples using lesser materials than those in commercial kits. FTA cards (Flinders ... more

C.A. Souza; T.C. Oliveira; S. Crovella; S.M. Santos; K.C.N. Rabêlo; E.P. Soriano; M.V.D. Carvalho; A.F.Caldas Junior; G.G. Porto; R.I.C. Campello; A.A. Antunes; R.A. Queiroz; S.M. Souza
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Forensic DNA; Forensic entomology; Mosquitoes blood meal

Investigations of any type of crime invariably starts at the crime scene by collecting evidence. Thus, the purpose of this research was to collect and analyze an entomological trace from an environment that is similar to those of indoor crime scenes. Hematophagous mosquitoes were collected from two residential units; saliva of volunteers that were residents in the units was also collected for ... more

K.C.N. Rabelo; C.M.R. Albuquerque; V.B. Tavares; S.M. Santos; C.A. Souza; T.C. Oliveira; N.C.L. Oliveira; S. Crovella
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COI gene; Forensic entomology; Sarcophagidae

Sarcophagidae, or flesh flies, are of great importance in forensic entomology, but their effective application requires precise taxonomic identification, which relies almost exclusively on characteristics of the male genitalia. Given that female flies and larvae are most abundant in animal carcasses or on corpses, precise morphological identification can be difficult; therefore, DNA ... more

K.S. Napoleão; C.A. Mello-Patiu; J. Oliveira-Costa; D.M. Takiya; R. Silva; R.S. Moura-Neto; K.S. Napoleão; C.A. Mello-Patiu; J. Oliveira-Costa; D.M. Takiya; R. Silva; R.S. Moura-Neto