The Forensic DNA testing is when the DNA testing is used to solve crimes and has become quite useful for law enforcement as well as achieving true justice. DNA testing has been useful in both convicting as well as exonerating criminal suspects in both current and older cases referred to as cold cases. In addition, progress in this form of DNA testing enables results to be provided accurately and quickly
Popular television programs
Many popular TV programs such as Cold Case, CSI series and Forensic Files have increased the public’s knowledge of the use of forensic DNA in solving crimes. Since each person’s genetic make-up is unique to only them, the results of forensic DNA testing are highly dependable and are used by the legal system to exonerate or convict suspects in criminal investigations.
Collecting DNA evidence
This type of forensic DNA testing is testing pertaining to using scientific knowledge to solve crimes. The DNA evidence was used first in Great Britain in 1985 after a 17-year old young man was arrested as the suspect in the rape of two young women. DNA absolved the boy and the real criminals were eventually caught by using DNA.
In the US, the first case to use this new DNA evidence was a case in 1987 in New York. The evidence was clarified by Dr. Michael Baird who is currently the Laboratory Director at DNA Diagnostic Center. Since that time, using evidence DNA has become increasingly consistent as a method of helping to solve crimes. Part of the reason that DNA evidence has proven so useful is the fact that DNA is inside every part of the body including:
- Blood and other bodily fluids such as saliva, mucus and sweat;
- Hair follicles and strands;
- Bones and skin cells found under fingernails.
Such samples often are found on:
- Bed sheets or bath towels;
- Clothing including sweatshirts, socks, underwear and hats;
- Drinking glasses as well as silverware;
- Discarded tissues, bandages, condoms, cigarette butts;
- Abandoned weapons, gloves or tapes and more.
Skin, blood, sweat, bodily fluid as well as samples of hair are found at scenes of crime. These samples are gathered by swabbing or by preserving any item on which DNA might be residing.