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Labs may report these two fractions as:
- Male fraction and female fraction (though in a male on male assault, these terms may be misleading).
- Sperm fraction and non-sperm fraction.
- S (sperm) fraction and E (epithelial) fraction.
- Fraction 1 and fraction 2.
Complete separation may not be possible for a variety of reasons. In such cases, one or both fractions may contain a mixture of sperm and non- sperm DNA. This does not necessarily preclude interpretation of results.
Note: the remainder of the module will use the terminology sperm and non-sperm fractions.
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
Fecha de Creación: 20 de Junio de 2023