DNA evidence and forensic genealogy led to the arrest of a 75-year-old Pennsylvania man in the 1969 rape and murder of a go-go dancer who was found dead in her San Diego apartment, police said. John Sipos was arrested Saturday at his home in Schnecksville for the murder of 24-year-old Mary Scott, who was discovered lifeless after being strangled nearly 51 years ago in her apartment on Nov. 20, 1969, San Diego police announced Tuesday. Sipos was identified as a suspect by investigators using DNA evidence left at the crime scene and forensic genealogy. Authorities had previously “exhausted all leads”...