- 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 8 :: mtDNA & Y-STR
Topic 4 :: Y-STR Laboratory Analysis
Specialized Circumstances Involving Y-STR Analysis
There may be additional specialized circumstances in which a laboratory may deem Y-STR analysis to be appropriate:
- In sexual assaults, to obviate the need for the time-consuming and oft-times inefficient differential extraction procedure for the separation of sperm and non-sperm fractions.
- To determine the number of semen donors in rape cases involving multiple assailants.
- In criminal paternity Y-STR haplotype of a missing individual by typing a male relative such as a son, brother, father, uncle, or nephew.
- To provide increased statistical discrimination in mixture or kinship analysis cases in which the likelihood ratio obtained from autosomal markers is insufficient for identification purposes.
