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Discrepancies between forensic DNA databases
Swedish National Laboratory of Forensic Science, Linköping, Sweden.
Swedish National Laboratory of Forensic Science, Linköping, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Molecular genetics . Linköping University, The Institute of Technology.
2011 (English)In: Book of Abstracts, 2011, 216- p.Conference paper (Refereed)
Abstract [en]

Evaluation of findings from forensic DNA analysis is made by the use of a reference database of DNA profilescompiled from a sample of individuals assumed to represent a specific population of interest. In severalcountries there are also databases of DNA profiles compiled from real casework. Such databases can consistof profiles obtained either from crime scenes for which no information about the donor is available, or fromindividuals suspected or convicted for a crime. The purpose with the latter is primarily to search them for hitsagainst a new recovered profile from a crime scene for purposes of intelligence and investigative work. However,these databases are continuously growing (in comparison with a more steady-state reference database)and one might ask whether they would constitute a more accurate mirror of the population of potentials donorsof a crime stain than does the reference database. Here we present a comprehensive statistical comparisonbetween a number of reference databases used in Sweden and two databases of DNA profiles from casework.Our results show no substantial differences with respect to various measurements of overall discrepancies butreveal significant differences for individual alleles at several markers.

Place, publisher, year, edition, pages
2011. 216- p.
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-70270OAI: diva2:437664
24th World Congress of the International Society for Forensic Genetics
Available from: 2011-08-30 Created: 2011-08-30 Last updated: 2011-09-05

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