NCJ Number
234195
Journal
Forensic Science International: Genetics Volume: 5 Issue: 2 Dated: March 2011 Pages: 122-125
Date Published
March 2011
Length
4 pages
Annotation
This study introduced a new Y-STR multiplex system for its application to forensic casework.
Abstract
The Y-chromosome STRs (short tandem repeat) markers are routinely utilized in the resolution of forensic casework related to sexual assault. For this, the forensic community has adopted a set of 11 (core) Y-STR that is incorporated in all commercial diagnostic systems. The previous studies of Y-STR polymorphisms in the South African population identified low levels of diversity and discrimination capacity for many commercial marker sets, determining a limited applicability of these systems to the local population groups. To overcome this shortcoming, the authors designed a Y-STR 10-plex system that shows higher discriminatory capacity (DC) than available commercial systems. The markers were selected from a population group of 283 individuals with African, European and Asian ancestry genotyped at 45 Y-STRs, applying an optimization based selection procedure to achieve the highest possible DC with the minimal number of markers. The 10-plex was satisfactorily subjected to developmental validation tests following the SWGDAM guidelines and shows potential for its application to genealogical and evolutionary studies. (Published Abstract)