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There must be a need for scientific evidence in the particular case, and the scientific evidence must fit the facts presented. As one court has explained, evidence must "fit" - that is, it must assist the trier of fact:
Admissibility thus depends in part upon "the proffered connection between the scientific research or test result to be presented and the particular disputed factual issues in the case." 19
As a general rule, DNA match evidence will fit in cases in which identity needs to be proven or if another physical fact (such as the occurrence of sexual contact) is in dispute.
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