- 01 Introduction
- 02 Biology of DNA
- 03 Practical Issues Specific to DNA Evidence
- 04 Introduction to the Forensic DNA Laboratory
- 05 Assuring Quality in DNA Testing
- 06 Understanding a Forensic DNA Lab Report
- 07 Statistics and Population Genetics
- 08 Mitochondrial DNA & Y-STR Analysis
- 09 Forensic DNA Databases
- 10 Collection of DNA Evidence from Suspects and Arrestees
- 11 Pretrial DNA Evidence Issues
- 12 Victim Issues
- 13 Trial Presentation
- 14 Postconviction DNA Cases
- 15 Emerging Trends
Principles of Forensic DNA
for Officers of the Court
for Officers of the Court
Module 3 :: Practical Issues
Topic 1 :: Crime Scene Issues Related to DNA Evidence
Detection of Biological Material
Any item that is suspected of coming into contact with either the victim or the suspect may contain biological evidence. The following are examples of commonly used techniques for detection of biological material:
- Visual inspection of the crime scene.
- Examination with ALS (Alternate Light Source) or UV (Ultraviolet) light source.
- Examination with oblique lighting, such as the use of a flashlight held at a 45 degree angle.
- Chemical presumptive testing.
