DNA is one of the most important roles to evidence and in a criminal case. It helps to prove a convict guilty or help those wrongly accused or convicted. DNA stands for deoxyribonucleic acid. Just about every cell contains DNA. The DNA that’s in people blood is also the same DNA in people’s hair, bone, saliva, skin, tissue and everything else. What’s great about someone’s DNA it does not ever change throughout their life. DNA was first used as a way of finding out paternity so genetic evidence can show who parented the child.
It was first developed in 1985 and first used in court in England when a seventeen year old boy was proven innocent after we was prosecuted for raping and killing someone. It was first used in the United States in Florida when prosecutors we’re able to convict Tommy Lee Andrews of rape after DNA had matched the same DNA collected from the 1st raped victim.
DNA was not every popular or disputed but once prosecutors started using it, defense attorneys started challenging how accurate it was. John Doe warrants were also known as a DNA warrant because the warrant was not just issued for a person but for a genetic code that’s part of a criminal investigation which no suspect has been identified but the warrant is only based on the DNA profile. The whole purpose of the John Doe warrant is to lower the toll of criminal cases of violent crimes. Some states have convicted offenders by using John Doe warrants and also have passed Legislation legalizing their use. In Wisconsin which also in September of 1999 a district attorney from their became the first prosecutor to obtain a warrant and file criminal charges again a man just by his DNA.