- 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 4 :: Intro To the Lab
Topic 1 :: History and Development of Forensic DNA Analysis
DNA Typing—Short Tandem Repeat
The current state-of-the-art DNA testing utilizes short tandem repeat (STR) technology which combines the best features of RFLP and PCR.
This method examines a subclass of VNTR regions of the DNA molecule that tend to repeat themselves in short, adjacent, or tandem, segments. STR technology can use partially degraded, small quantity DNA and has a very high degree of discrimination.
'Multiplex' STRs are groups of genetically independent STR markers that can be examined at the same time. These multiplexes have proven to be very successful and provide the basis for the local, state and national DNA database entries.
