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Forensic Reliability of DNA Evidence

Court accepts DNA tests results as evidence in the prosecution of crime and legal litigation, although courts insist on the accuracy of DNA testing sometimes it can be difficult to tell if the whole process right from collecting DNA from the crime scene was appropriate, given series of people involved along the way, for these reasons questions, have been raised on the reliability of DNA test results as evidence of a crime, this result to many people hiring an attorney to challenge the admissibility of DNA results as evidence in criminal cases. In case you find yourself accused of a crime with DNA as the main evidence, hire an experienced and professional criminal defense attorney who is familiar with DNA cases and processes, such attorney knows all the techniques involved in DNA collection and testing and can question the reliability of the process which can question the reliability of DNA testimony in your criminal case. So the question is, what makes DNA cases so complicated, to answer this question, this article has detailed some reasons DNA cases to be complex so continue reading.

The reliability of DNA results can be influenced by how the DNA was collected from the crime scene or the individual, the truth is even when a prosecutor is acting in good faith there are various points the highly susceptible DNA can get damaged, contaminated, compromised or even destroyed, this may happen during DNA collection, imagine all people who are involved at the crime scene police, witnesses, forensic detectives, and law enforcement support personnel, it can be difficult to tell how careful all these people were during DNA collection to avoid contamination or damage of the delicate DNA evidence.

Given that DNA evidence is mainly collected from semen, blood stains, dead skin, hair, etc is not easy to prove in a courtroom that the amount collected was enough to provide reliable evidence that is admissible in court, a criminal defense attorney can ask for evidence that ensured the DNA was not compromised or destroyed by exposure to sunlight or cold, police may also be required to prove that the DNA was from the guilty party because it can be from an innocent person can be at the crime scene and the DNA used against the individual, all these possibilities make it challenging to use DNA as evidence in crime scene because they are possibilities of forensic investigators and the team getting it wrong even when they are careful with the whole process.

It is worth noting that human shares 99.9 percent of their DNA, this implies that a DNA sample collected from a crime scene is almost similar to DNA of all people on earth and forensic investigators are looking for the 0.1 percent DNA that is distinct from a small sample collected from the crime scene, which might be compromised or damaged. Those are some reasons why forensic investigators find it complex to use DNA as evidence in criminal cases.

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