Forensic molecular genetics has been evolved from a rapidly developing field into accepted forensic science, leading DNA databases with DNA profiles from suspects and convicted offenders. DNA evidence has taken a central role by carrying a significant weight for convictions in the court of justice, as well as by excluding innocent suspects early on in a criminal investigation. At present, a robust system for DNA typing has been established for paternity testing and forensic stain analysis in criminal casework. In addition, forensic biologist should be aware about the ethical and legal consequences of their research on the society and the criminal justice system. New technologies will only be accepted by the society if scientists can demonstrate that their research is based on sound and reliable principles.