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Open research questions in Forensic and Genetic Research

51 unresolved questions extracted from the limitations and future-work sections of 983 Forensic and Genetic Research papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Human skin pigmentation represents a compelling example of adaptive evolution. Far from being a static trait, it reflects a dynamic evolutionary narrative, embedded in global patterns of migration, selection, sociocultural, and behavioral adaptation. The evidence synthesized here in this review demonstrates that UVR has been a major selective force underlying global pigmentation diversity, yet no single evolutionary model sufficiently explains the observed patterns. Instead, pigmentation evolution reflects a multilayered adaptive landscape in which UVR-mediated selection interacts with physiological constraints, demographic history, and sociocultural buffering. Advances in genomics further demonstrate that similar pigmentation phenotypes have evolved through distinct genetic routes across populations, ranging from large-effect selective sweeps in Europe to predominantly polygenic adaptation in East Asia, ancestry-specific architectures in Africa, South Asia, and regionally variable selective pressures in the Americas, Southeast Asia, and Oceania. Ancient DNA studies further demonstrate that many present-day pigmentation patterns are evolutionarily recent and have been strongly influenced by migration, admixture, and changing ecological conditions. Taken together, these findings trait whose evolutionary support a view of human skin pigmentation not as a simple to UVR gradient, but as a dynamic latitudinal response biocultural the interaction of natural selection, population history, and geneculture coevolution. It accentuates the need of a more integrative perspective that combines functional genomics, sociogenomics, environmental modeling, and population history. trajectory reflects important consequences Although substantial progress has been made in elucidating the adaptive significance and genetic architecture of human skin regarding pigmentation, the loci, functional representation of globally diverse populations, and the temporal dynamics through which pigmentation-associated variants emerged and spread.

    The genetic architecture of human skin pigmentation: evolution and adaptation across global populations · 2026 · DOI

  • This study has several limitations that must be acknowledged. First, the sample size of the target population is relatively small, which limits the statistical power and presents challenges in comprehensively addressing the genetic diversity within this ethnic minority. the geographical scope of the sampling within the Ewenki population is limited, as it includes only individuals from the Inner Mongolia Autonomous Region. While these data offer valuable insights into the genetic structure of this underrepresented group, they may not comprehensively capture the genetic diversity present among all Ewenki subgroups, particularly those residing in Heilongjiang and Siberia. The Ewenki are geographically dispersed across three principal regions-the IMAR of China, the Greater Khingan Mountains of Heilongjiang Province, and the Siberian regions of the Russian Federation - and historically encompass several culturally and linguistically distinct branches, including the Solon, Tungus, and Yakut Ewenki. Previous uniparental and limited autosomal studies suggest that geographic separation and divergent contact histories may have shaped substructure within this ethnolinguistic group. Heilongjiang Ewenki populations, which have maintained closer contact with Oroqen, Hezhen, and Manchu groups, may carry relatively higher proportions of Tungusic and ancient Page 321 Wei et al. J Transl Genet Genom. 2026;10:308-26 Northeast Asian ancestries with weaker Mongolic-related signals than the IMAR samples examined here. Siberian Evenki groups, particularly those in the Russian Far East and Eastern Siberia, are hypothesized to retain a larger fraction of Ancient Siberian hunter-gatherer ancestry with reduced Yellow River Basin farmer-related contributions. The IMAR Ewenki may therefore occupy an intermediate genomic position, reflecting long-term coexistence with Mongolic-speaking populations on the Hulunbuir grasslands and demographic influences from agricultural expansion in the Central Plains. Accordingly, while our qualitative conclusion - that the Ewenki derive primarily from admixture between Ancient Northeast Asian/Siberian and Yellow River Basin ancestral sources - likely reflects a shared ancestral foundation across subgroups, the specific quantitative ancestry proportions and admixture timing may differ across regions. We therefore caution against direct extrapolation of our quantitative estimates to Heilongjiang or Siberian Ewenki populations without further validation. Future studies incorporating samples from these underrepresented subgroups, ideally combined with whole-genome sequencing and regional ancient DNA, will be essential for building a comprehensive pan-Ewenki demographic framework[82,83].

    Population genetic history of the ancient reindeer-herding Ewenki people · 2026 · DOI

  • , UV exposure[38]) was not simulated, so results primarily apply to fresher samples; (4) Application to mixed DNA samples was not explored in the present study due to the increased stutter formation associated with MALBAC and the additional complexity of interpreting imbalanced or multi- contributor profiles.

    A systematic study of WGA strategies for enhanced STR and SNP genotyping on trace DNA · 2026 · DOI

  • Limited information on database integration standards and compatibility of ForenSeq-generated profiles with existing forensic DNA databases worldwide.

    DNA Profiling in forensic genetics and anthropogenetics: Techniques, databases, and ethical considerations · 2026 · DOI

  • The excerpt does not address how to handle DNA mixtures with more than two contributors or provide guidance on determining the number of contributors in complex mixtures.

    DNA Profiling in forensic genetics and anthropogenetics: Techniques, databases, and ethical considerations · 2026 · DOI

  • The presence of this microorganism in all four cases, albeit at different levels, is an “incidental finding”, which allows us to speak of the need for further studies of samples from both the Volosovo-Danilovsky burial and other Fatyanovo sites, including the assessment of the prevalence of pathogenic microorganisms in the population of the Russian Plain at this time.

    Identification of Ancient Pathogens: Streptococcus pneumoniae in DNA Samples from Four Burials of the Volosovo-Danilovsky Burial Ground of the Fatyanovo Culture · 2025 · DOI

  • While critiques of the importance of consent are well documented in the biomedical and forensic biobanking literature, this has not been explored for IGG.

    Problematizing consent: searching genetic genealogy databases for law enforcement purposes · 2020 · DOI

  • BACKGROUND: Persons whose identifying DNA profile (STR profile) is not yet known to the ingvestigating authorities cannot be identified by standard forensic DNA analysis (STR profiling) as it is now practiced.

    The Use of Forensic DNA Phenotyping in Predicting Appearance and Biogeographic Ancestry · 2019 · DOI

  • Ancient DNA / molecular archaeology, however, is not limited to the comparatively restrictive set of information as usually employed in forensic case work analyses but can also be applied to phenotypical markers, ethno-related genotypes or pathological features.

    Ancient DNA and Forensics Mutual Benefits a Practical Sampling and Laboratory Guide Through a Virtual Ancient DNA Study · 2014 · DOI

  • Whilst PlassData can be used to record vital DNA profiling information, what is lacking is the ability to conduct direct or kinship searches to look for matches between missing persons cases and unidentified deceased.

    The Victorian missing persons DNA database – two interesting case studies · 2014 · DOI

  • As genetic studies based on classical and gender-specific genetic markers provided contradictory results to this debate thus far, we investigated the HLA diversity (HLA-A, -B, and -DRB1 loci) of an Austroasiatic Munda population from Northeast India and its relationships with other populations from India and Southeast Asia.

    The Austroasiatic Munda Population from India and Its Enigmatic Origin: A HLA Diversity Study · 2011 · DOI

  • In 2 cases, when the PowerPlex 16 profiles indicated possible relatedness of the remains with reference samples, but there were insufficient probabilities to call the match to possible male paternal relatives, we resorted to an additional analysis of Y-STR markers.

    Identification of Skeletal Remains of Communist Armed Forces Victims During and After World War II: Combined Y-chromosome Short Tandem Repeat (STR) and MiniSTR Approach · 2009 · DOI

  • Low clearance rates in property crime are the result of a combination of factors, but are often attributed to a lack of evidence in property crime investigations (where eye witness accounts are rare) and the large number of cases relative to investigators available (Eck, 1983; Greenwood, Chaiken, & Petersilia 1977).

    PROTOCOL: Use of DNA Testing in Police Investigative Work for Increasing Suspect Identification, Arrest, Conviction, and Case Clearance · 2009 · DOI

  • Isolated tribes in remote areas are important for genetic studies, and one such little known subtribe of the Adi tribe, namely, the Adi Panggi (Pangi) of the Upper Siang District of Arunachal Pradesh, India, was studied for surname distribution to deduce the deviation from random mating and genetic kinship between villages.

    Genetic Kinship Among an Isolated Adi Tribe of Arunachal Pradesh: Isonymy in the Adi Panggi · 2007 · DOI

  • We studied the distribution of ABO blood groups among three little known subtribes of the Adi tribe, namely, the Panggi, Komkar, and Padam, of the East and Upper Siang districts of Arunachal Pradesh, India.

    Genetic Heterogeneity Among Three Adi Tribes of Arunachal Pradesh, India · 2006 · DOI

  • Despite the large size of the contemporary nomadic Fulani population (roughly 13 million people), the genetic diversity and degree of differentiation of Fulanis compared to other sub-Saharan populations remain unknown.

    mtDNA of Fulani Nomads and Their Genetic Relationships to Neighboring Sedentary Populations · 2006 · DOI

  • 9%) had mutations that have not been described before, and might therefore be considered as previously unsampled African variants or as new mutations arising in the American continent.

    Mitochondrial DNA Studies Show Asymmetrical Amerindian Admixture in Afro-Colombian and Mestizo Populations · 2003 · DOI

  • PCR allowed the sex of infant's remains to be identified in individual where the sex could not be determined by anthropological methods and in three remains where sex could not be inferred from archaeological data.

    Molecular genetic sex determination of Medieval human remains from North Russia: Comparison with archaeological and anthropological criteria · 1998 · DOI

  • Smallpox was a major driver of population collapse in the Americas after European contact, yet the genetic identity of the causal strains remains unknown.

    The genomic identity of early smallpox in South America · 2026 · DOI

  • ABSTRACT Background The genetic structure of the Kuwaiti population using Alu insertion variants has not been previously investigated.

    Structural Variations of Alu Elements in the Kuwaiti Population: Laying the Foundations for Forensic Medicine · 2026 · DOI

  • These patterns reveal aDNA damage beyond deamination and that remains understudied, suggesting that aeDNA should be carefully evaluated in genomic and evolutionary analyses.

    Molecular Clock Dating of Ancient Environmental DNA Reveals Damage Beyond Deamination · 2026 · DOI

  • One particularly understudied area is the Eastern Balkan Peninsula where at least three lineages occur, showing ranges that may be partly overlapping.

    New data on the distribution of the Vipera ammodytes (Linnaeus, 1758) mitochondrial lineages place their contact zone in western Bulgaria · 2024 · DOI

  • Molecular studies have outlined several mitochondrial lineages of Vipera ammodytes , but the limits of their distribution ranges remain unclear due to limited sampling throughout the vast range of the species.

    New data on the distribution of the Vipera ammodytes (Linnaeus, 1758) mitochondrial lineages place their contact zone in western Bulgaria · 2024 · DOI

  • In particular, it highlights the need for further research on the topic, as the current view of the genetic history of the population in Sabah and Sarawak is only available on a limited number of ethnic groups currently living in Borneo.

    A New Analysis of Population History in Sabah and Sarawak · 2018 · DOI

  • By looking particularly carefully at archives as sites of genealogical data production, this essay attempts to shed light on this understudied question and contributes to the premodern history of data.

    Genealogy as Archive-Driven Research Enterprise in Early Modern Europe · 2017 · DOI

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51 open questions have been extracted from the limitations and future-work passages of 983 Forensic and Genetic Research papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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