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What is Dna fingerprinting ?
DNA fingerprinting is a method of identification that compares fragments of DNA, the genetic material found within
the cell nuclei of all living things. In mammals, the strands of DNA are grouped into structures called chromosomes.
With the exception of identical twins, the complete DNA of each individual is unique.
In criminal investigations, DNA fingerprints
derived from evidence collected at the crime scene are compared to the DNA fingerprints of suspects.
The process - samples are taken, one from the suspect and one from the scene of the crime.
Samples can be skin tissue, hair, blood, semen, vaginal fluid, anything else with cells in it.
The DNA of both samples is extracted, studied, and compared to see if they are a match.
Some facts about DNA testing
DNA fingerprinting was originally used to detect genetic diseases.
DNA fingerprinting was first developed as an identification technique in 1985.
The first criminal conviction based on DNA evidence in the United States occurred in 1988.
DNA testing of prisoners has been carried out in Victoria (Australia) since legislation was passed in July 1998.
Mandatory DNA testing of NSW (Australia) prison inmates began on January 1st, 2001.
DNA testing is highly accurate - it is the most accurate piece of scientific evidence a lawyer can have.
Cases solved through DNA testing
DNA Testing and Guilt or Innocence
DNA Task Force Targets Inmates
Police To Add 12,000 Samples of DNA
DNA nets a town's worst fears (Stephen James Boney)
Murder Gets New Profile