Examining the transfer of male DNA onto female underwear in simulated non sexual social interaction versus digital penetration to assist in the evaluation of results in casework scenarios |
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| Institution: | 1. Eurofins Forensic Services, Sir Alec Jeffreys Building, Peel Avenue, Calder Park, Wakefield WF2 7UA, United Kingdom;2. Eurofins Forensic Services, Building 3, Drayton Manor Business Park, Tamworth, Staffordshire B78 3GL, United Kingdom;3. Cellmark Forensic Services, Unit B1, Buckshaw Link, Ordnance Road, Buckshaw Village, Chorley, Lancashire PR7 7EL, United Kingdom;4. Cellmark Forensic Services, 16 Blacklands Way, Abingdon Business Park, Abingdon, Oxfordshire OX14 1DY, United Kingdom;6. Forensic Science Northern Ireland, 151 Belfast Road, Carrickfergus, County Antrim, BT38 8PL, United Kingdom;7. Department of Justice and Equality, Forensic Science Ireland, Garda Headquarters, Phoenix Park, Dublin 8, Ireland;8. SPA Forensic Services, Scottish Crime Campus, Craignethan Drive, Gartcosh G69 8AE, Scotland |
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| Abstract: | Experiments have been carried out by the UK and Ireland Association of Forensic Science Providers Body Fluid Forum (AFSP BFF) to determine the levels of male DNA, detected during Y-STR analysis, that may be expected on female underwear from non-sexual social interaction and digital penetration, versus non-sexual social interaction only. The data obtained strongly supports the existing assumptions made: whilst low levels of DNA may be inadvertently transferred to the inside surface of a female’s underwear during social interaction with a male, there is a low expectation of detecting a matching Y-STR profile to that male, which is suitable for statistical evaluation, unless he is a co-habitant of that female. |
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| Keywords: | Body fluid forum Male DNA Y-STR Digital penetration Underwear |
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