DNA has been a helpful tool to solve crimes. People who use DNA as a clue to solve crimes, trust a 100% in the results. In 1984 was the first time scientists could use DNA to differentiate people. DNA uses a small part of a person to know all the genetic information about that person.
Thanks to the DNA, a man who was pointed guilty to murder 2 girls, showed up that he was innocent thanks to the DNA tests.
The DNA tests are not used only with humans; it’s also used in plants. Scientists used the DNA of a tree to know the true about a HIV infection.
In 1990, law got a databank and thanks to the DNA results, the criminal was arrested.
The main advantage of DNA is that the results are efficient and accurate. But the DNA has also a disadvantage, DNA profiles could be eventually to certain illnesses and character traits and this information would be used by other organisations to the disadvantage of a person.
Sometimes contamination of the DNA may lead to errors in the results.