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DNA Evidence

DNA tests have the potential to produce powerful and convincing results, but that potential is not always realized. Careful evaluation sometimes reveals significant problems that render DNA evidence far less probative than it might initially appear.

If you are new to DNA evidence, click "Where do I start" for a tutorial.

Where do I start?   Submit a Document
 
  • Forensics Library
    • DNA DNA
      • DNA Model Pleadings DNA Model Pleadings
        • DNA Statistics ("Cold Hits," Uniqueness, etc.) DNA Statistics ("Cold Hits," Uniqueness, etc.)
          Document *Cuff & Heatley Reply Reply brief arguing DNA evidence inadmissible in absence of valid statistics and that valid statistics cannot be computed where there is an imcomplete match due to alleged "allelic dropout."
          [ 02/01/99  |  Submitter: Thompson  |  more info ]
          Document *Brief in U.S. v. Cuff & Heatley Brief arguing that DNA evidence is inadmissible in absence of valid statistics and that there is no valid way to compute statistics in a "partial match" case. Also discusses a sample switch error in the New York City Office of Chief Medical ...
          [ 01/01/99  |  Submitter: William C. Thompson  |  more info/full abstract ]
          Document *Defense Notice of Objections in OJ Simpson Trial Useful for educating judges about the right and wrong way to present DNA evidence. Several objections to statistical significance of purported matches.
          [ 04/01/95  |  Submitter: Thompson  |  more info ]
          Document *10-17-02 CA v. Montgomery Motion to Suppress DNA Cold hit case (part of CA v. Robinson investigation)where defendant was improperly entered into the database in the first place. Arguments on Fourth Amendment violations of databasing and whether the error was a reasonable "mistake".
          [ Submitter: DC PDS  |  more info ]
          Document DNA Advisory Board (DAB) 2000 Guidelines Re Statistics Text of the DAB, blue-ribbon panel selected by the FBI. Critical for challenges to DNA statistics. Re-interprets NRC II findings. Full title: "Statistical and Population Genetics Issues Affecting the Evaluation of the Frequency of Occurrence of ...
          [ Submitter: DC PDS  |  more info/full abstract ]