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The decision to call a rebuttal expert witness depends on the particulars of the prosecutor's case and the defense's assertions. The prosecutor may want to call a rebuttal expert witness if the defense makes arguments, suggestions, or presents evidence of one or more of the following issues concerning the DNA typing:
- Contamination
- Degradation
- Planted or switched DNA
- Qualifications of the DNA analyst
- Failed proficiency testing by DNA analyst
- Error rates
- Database challenges
- Catch all
Additional Online Courses
- What Every First Responding Officer Should Know About DNA Evidence
- Collecting DNA Evidence at Property Crime Scenes
- DNA – A Prosecutor’s Practice Notebook
- Crime Scene and DNA Basics
- Laboratory Safety Programs
- DNA Amplification
- Population Genetics and Statistics
- Non-STR DNA Markers: SNPs, Y-STRs, LCN and mtDNA
- Firearms Examiner Training
- Forensic DNA Education for Law Enforcement Decisionmakers
- What Every Investigator and Evidence Technician Should Know About DNA Evidence
- Principles of Forensic DNA for Officers of the Court
- Law 101: Legal Guide for the Forensic Expert
- Laboratory Orientation and Testing of Body Fluids and Tissues
- DNA Extraction and Quantitation
- STR Data Analysis and Interpretation
- Communication Skills, Report Writing, and Courtroom Testimony
- Español for Law Enforcement
- Amplified DNA Product Separation for Forensic Analysts