Although DNA has become an important part of criminal prosecutions, there are many who really question whether it is a perfect source of evidence. Recently, the Daniel Holtzclaw case highlighted some of the problems that are associated with DNA evidence. In that case, an ex-cop was convicted of rape. The defense attorneys argued that the analysis of the DNA in the case was faulty.
It is imperative for DNA evidence to be handled, stored, transmitted, and analyzed correctly in order to avoid a mistrial. Sometimes, convictions are overturned based on faulty evidence of this kind due to bad science. The services of a police lab analyst are required in order to ensure that the results of the tests can be independently verified. If the case involves a law enforcement officer, an independent expert witness may be called to support the defense team.
Some of the Problems of DNA evidence