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Criminal justice system professionals will appreciate Forensic DNA Evidence: Science and the Law as DNA evidence becomes an increasingly important and common aspect of law enforcement investigations, courtroom evidence, and postconviction litigation. This easy-to-use deskbook helps law enforcement, prosecutors, defense attorneys, legal educators, and the judiciary keep pace and maintain an appropriate level of scientific literacy in an era of rapidly evolving forensic science technology. It is written in clear and practical language with an emphasis on California law. Contents include: History of forensic DNA testing DNA biology Crime scene evidence collection and chain of custody Collecting DNA reference samples - legal issues and approaches DNA database programs DNA testing technology and laboratory procedures DNA mixtures DNA statistics New and emerging technologies Laboratory accreditation, quality assurance and training Statutes of limitation and \"John Doe\" arrest warrants Discovery Scientific evidence admissibility, with DNA focus Postconviction DNA testing and evidence retention Future technologies