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Forensic use of Y-chromosome DNA: a general overview

Open access
Kayser, Manfred·2017·Human Genetics

Abstract

The male-specific part of the human Y chromosome is widely used in forensic DNA analysis, particularly in cases where standard autosomal DNA profiling is not informative. A Y-chromosomal gene fragment is applied for inferring the biological sex of a crime scene trace donor. Haplotypes composed of Y-chromosomal short tandem repeat polymorphisms (Y-STRs) are used to characterise paternal lineages of unknown male trace donors, especially suitable when males and females have contributed to the same trace, such as in sexual assault cases. Y-STR haplotyping applied in crime scene investigation can (i) exclude male suspects from involvement in crime, (ii) identify the paternal lineage of male perpetrators, (iii) highlight multiple male contributors to a trace, and (iv) provide investigative leads for finding unknown male perpetrators. Y-STR haplotype analysis is employed in paternity disputes of male offspring and other types of paternal kinship testing, including historical cases, as well as in special cases of missing person and disaster victim identification involving men. Y-chromosome polymorphisms are applied for inferring the paternal bio-geographic ancestry of unknown trace donors or missing persons, in cases where autosomal DNA profiling is uninformative. In this overview, all different forensic applications of Y-chromosome DNA are described. To illustrate the necessity of forensic Y-chromosome analysis, the investigation of a prominent murder case is described, which initiated two changes in national forensic DNA legislation both covering Y-chromosome use, and was finally solved via an innovative Y-STR dragnet involving thousands of volunteers after 14 years. Finally, expectations for the future of forensic Y-chromosome DNA analysis are discussed.

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Metadata

Authors
Kayser, M.
Venue
Human Genetics
Published
2017-03-17
Volume
136
Issue
5
Pages
621-635
ISSN
  • 0018-7348 (ISSN-L)
  • 0340-6717
  • 1432-1203
OpenAlex
W2596362587
Cited by
386
References
58
FWCI
17.35
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Forensic use of Y-chromosome DNA: a general overview. https://app.cochat.ai/papers/10.1007/s00439-017-1776-9
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Kayser, M. (2017). Forensic use of Y-chromosome DNA: a general overview. Human Genetics. https://doi.org/10.1007/s00439-017-1776-9

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