A Q-tip, a tissue and a pizza crust. To investigators, this seemingly innocuous trash was DNA-laden treasure, helping crack the cases of the University of Idaho murders , the Golden State Killer and the Gilgo Beach slayings , according to authorities, using a forensic tool called investigative genetic genealogy . Investigators in the Nancy Guthrie case hope that science can point to a suspect. But there are challenges. Guthrie, the 84-year-old mother of “TODAY” co-host Savannah Guthrie, was

Tag-uri: DNA