Admissibility of DNA Evidence

Admissibility of DNA Evidence

In t­he last few years, DNA evidence has started to play a big part in many nations' criminal justice systems. It has been used to prove that suspects were involved in crimes and to free people who were wrongly convicted. In the United States, it has been integral to several high-profile criminal cases.

Our staff works hard to make the DNA Identity Testing Center your choice of provider for all DNA testing services. We ensure superior quality, service and convenience to our clients. In our commitment to providing convenience, please know that we provide a free DNASwabTM Home DNA Collection Kit for use in all types of private DNA tests.

DNA MOLECULE
DNA MOLECULE
DNA molecule is a long, twisting chain known as a double helix. DNA looks pretty complex, but it's really made of only four nucleotides: Adenine, Cytosine, Guanine, Thymine. These nucleotides exist as base pairs that link together like the rungs in a ladder.
Matching DNA
Matching DNA
But, in general, the tests examine non-coding portions of DNA strands. Genes, which serve as templates for making proteins in your cells, make up only five percent of a DNA strand. The remainder of your DNA is non-coding and includes lots of repeating base pairs. Different types of tests look for and analyze different base pair repetition patterns.
Restriction Fragment Length Polymorphism
Restriction Fragment Length Polymorphism (RFLP) analysis was one of the first forensic methods used to analyze DNA. It analyzes the length of strands of DNA that include repeating base pairs. These repetitions are known as  variable number tandem repeats (VNTRs) because they can repeat themselves anywhere from one to thirty times.
Using DNA Evidence
Given the high profile of DNA evidence during the O.J. Simpson trial, most people know that DNA profiles are used by criminal investigators to: Prove guilt - Matching DNA profiles can link a suspect to a crime or crime scene. Exonerate an innocent person - Innocent people have been freed from death row in the United States based on DNA evidence. So far, DNA evidence has been almost as useful in excluding suspects as in fingering and convicting them; about 30 percent of DNA profile comparisons done by the FBI result in excluding someone as a suspect.
  All Rights Reserved By 800DNAEXAM.com © 2008 Designed by Segnant