Considering relatives when assessing the evidential strength of mixed DNA profiles

Duncan Taylor, Jo-Anne Bright, John Buckleton

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    Sophisticated methods of DNA profile interpretation have enabled scientists to calculate weights for genotype sets proposed to explain some observed data. Using standard formulae these weights can be incorporated into an LR calculation that considers two competing propositions. We demonstrate here how consideration of relatedness to the person of interest can be incorporated into a LR calculation and how the same calculation can be used for familial searches of complex mixtures. We provide a general formula that can be used in semi or fully automated methods of calculation and demonstrate their use by working through an example.

    Original languageEnglish
    Pages (from-to)259-263
    Number of pages5
    JournalForensic Science International: Genetics
    Volume13
    DOIs
    Publication statusPublished - Nov 2014

    Keywords

    • Continuous model
    • DNA profile interpretation
    • Likelihood ratio
    • Mixtures
    • Relatives
    • STRmix

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