Renee Montgomery was a criminalist at the California Department of Justice's Berkeley DNA laboratory, where she performed casework analysis and helped develop new methods; she held a UC Davis bachelor's degree in environmental toxicology and had taken genetics coursework after graduation. In the criminal trial, she testified for the prosecution about D1S80 typing of crime-scene evidence; on cross-examination, she acknowledged that she had not performed a D1S80 test before developing and running the program for this case, that the method had little prior casework use, and that applicable guidelines were voluntary. She also testified in the civil trial, reporting Simpson-consistent results at Bundy and Rockingham while excluding him from most glove areas.