Touch Dna as Forensic Aid: A Review
Keywords:Touch DNA, Contact DNA, Trace DNA, DNA fingerprinting, criminal investigation, forensic science, Real Time PCR, PCR
Touch DNA technique which is being used in many advanced countries as a modern tool in criminal justice system. It is basically meant for acquiring genetic information from biological substances (cells released from epidermal surfaces) left on touched samples to establish it’s relatedness. It refers to recovery of traces of DNA from the biological cells released during the contact which is in a very low quantity, for further analysis and generation of a DNA profile of a person. Released dead cells are not visible to naked eyes and hence it is difficult to locate and recover successfully. DNA profiling from touched samples is difficult and hence require sensitive approach in recovery, extraction and amplification. Success of Touch DNA analysis, therefore, depends upon various factors like collection, sampling and preservation, removal of contaminations, quantification, amplification, analysis and interpretations. Various methods have been developed for the collection of Touch DNA over the time. Sophisticated kits and instrument and well equipped forensic laboratories help to provide concrete DNA profiles thus helping to the Criminal Justice System.
How to Cite
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Re use and mixing of content policy- We follow Creative Commons Licence Policy. We follow CC BY. Please refer below for all details
This license lets others distribute, remix, adapt, and build upon our work, even commercially, as long as they credit us for the original creation.
- The journal allows readers to read, download, copy, distribute, print, search, or link to the full texts of its articles and allow readers to use them for any other lawful purpose.
- The journal allows the author(s) to hold the copyright without restrictions.
- The journal allows the author(s) to retain publishing rights without restrictions