Analysis of DNA transfer to firearms considering relevant alternative handling scenarios

Annica Gosch; Jan Euteneuer; Johanna Preuß-Wössner; Cornelius Courts

doi:10.1016/j.fsigss.2019.10.041

Analysis of DNA transfer to firearms considering relevant alternative handling scenarios

Annica Gosch, Jan Euteneuer, Johanna Preuß-Wössner, Cornelius Courts^*

^*Corresponding author for this work

Institute of Forensic Medicine

University of Kiel

6 Citations (Scopus)

Abstract

The presented study aims at gaining a better understanding of factors affecting the variability of trace DNA profiles obtained from biological material recovered from firearms handled in gun-related crimes. For this purpose, skin contact traces resulting from four realistic alternative handling scenarios were recovered from different surfaces of two types of firearms and the corresponding trace profile characteristics (DNA yield, relative profile contribution for known and unknown contributors) were compared. Observed differences between handling conditions, firearms and surface types, handling individuals and individual deposits emphasize the complexity of trace DNA profile composition expected to be recovered from firearms after realistic handling scenarios. The obtained data will serve as useful information for forensic scientists providing expert opinion on alternative propositions at activity level in the context of gun-related crimes.

Original language	English
Journal	Forensic Science International: Genetics Supplement Series
Volume	7
Issue number	1
Pages (from-to)	433-435
Number of pages	3
ISSN	1875-1768
DOIs	https://doi.org/10.1016/j.fsigss.2019.10.041
Publication status	Published - 12.2019

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being
SDG 16 Peace, Justice and Strong Institutions

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10.1016/j.fsigss.2019.10.041

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title = "Analysis of DNA transfer to firearms considering relevant alternative handling scenarios",

abstract = "The presented study aims at gaining a better understanding of factors affecting the variability of trace DNA profiles obtained from biological material recovered from firearms handled in gun-related crimes. For this purpose, skin contact traces resulting from four realistic alternative handling scenarios were recovered from different surfaces of two types of firearms and the corresponding trace profile characteristics (DNA yield, relative profile contribution for known and unknown contributors) were compared. Observed differences between handling conditions, firearms and surface types, handling individuals and individual deposits emphasize the complexity of trace DNA profile composition expected to be recovered from firearms after realistic handling scenarios. The obtained data will serve as useful information for forensic scientists providing expert opinion on alternative propositions at activity level in the context of gun-related crimes.",

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AU - Gosch, Annica

AU - Euteneuer, Jan

AU - Preuß-Wössner, Johanna

AU - Courts, Cornelius

PY - 2019/12

Y1 - 2019/12

N2 - The presented study aims at gaining a better understanding of factors affecting the variability of trace DNA profiles obtained from biological material recovered from firearms handled in gun-related crimes. For this purpose, skin contact traces resulting from four realistic alternative handling scenarios were recovered from different surfaces of two types of firearms and the corresponding trace profile characteristics (DNA yield, relative profile contribution for known and unknown contributors) were compared. Observed differences between handling conditions, firearms and surface types, handling individuals and individual deposits emphasize the complexity of trace DNA profile composition expected to be recovered from firearms after realistic handling scenarios. The obtained data will serve as useful information for forensic scientists providing expert opinion on alternative propositions at activity level in the context of gun-related crimes.

AB - The presented study aims at gaining a better understanding of factors affecting the variability of trace DNA profiles obtained from biological material recovered from firearms handled in gun-related crimes. For this purpose, skin contact traces resulting from four realistic alternative handling scenarios were recovered from different surfaces of two types of firearms and the corresponding trace profile characteristics (DNA yield, relative profile contribution for known and unknown contributors) were compared. Observed differences between handling conditions, firearms and surface types, handling individuals and individual deposits emphasize the complexity of trace DNA profile composition expected to be recovered from firearms after realistic handling scenarios. The obtained data will serve as useful information for forensic scientists providing expert opinion on alternative propositions at activity level in the context of gun-related crimes.

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JO - Forensic Science International: Genetics Supplement Series

JF - Forensic Science International: Genetics Supplement Series

IS - 1

ER -

Analysis of DNA transfer to firearms considering relevant alternative handling scenarios

Abstract

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