- 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 7 :: Statistics
Topic 4 :: Interpreting Mixtures
Mixture Laboratory Reporting
Laboratories may vary in the way in which they report mixtures:
- Report the presence of a mixed sample, without an accompanying statistical weight calculation
- Report the presence of a mixed sample and calculate a random match probability (e.g., when a major contributor can be clearly interpreted)
- Report the presence of a mixture and calculate the combined probability of inclusion (such as a random match probability) or a combined probability of exclusion
- Report the presence of a mixed sample and calculate the likelihood ratio of the known contributors to the mixed sample to the unknown contributors to the mixture
