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                            Library & Multimedia
 Uncertainty in the Number of Contributors in the Proposed New CODIS Set
NCJ Number
              250064

Author(s)
          M. D. Coble, J. A. Bright
Date Published

November 2015
Length
              5 pages
Annotation
              This study examined the probability of a mixed DNA profile appearing as having originated from a fewer number of contributors for the African American, Asian, Caucasian and Hispanic US populations, using a range of locus configurations from the proposed new CODIS set.
Abstract
              The probability that multiple contributors are detected within a forensic DNA profile improves as more highly polymorphic loci are analysed. The assignment of the correct number of contributors to a profile is important when interpreting the DNA profiles.   These theoretical calculations were based on allele frequencies only and ignored peak heights. This analysis shows that the probability of a higher order mixture (five or six contributors) appearing as having originated from one less individual is high. This probability decreases as the number of loci tested increases.  (Publisher abstract modified)
      
  
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        Population Genetic Issues for Forensic DNA Profiles
    
  
  
Date Published: November 1, 2015
    
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