NBC Evening News for Tuesday, Dec 17, 1968
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(Studio) Chromosome study reported May involve Sirhan Sirhan.
REPORTER: Chet Huntley
(Los Angeles, California) Extra male chromosome seems to cause trouble. Known as XYY syndrome. Film at Children's Hospital of Los Angeles shown. Situation explained. [Researcher Dr. John MELNYK - details circumstances. XYY group high among prisoners.] Atascadero State Hosp. film shown; research noted. [Psychologist Dr. Frank VANASEK - cautious with regard to generalizations about XYY and criminality.] Sirhan Sirhan lawyer to check XYY matter with regard to his client. [Researcher Dr. Havelock THOMPSON - speaks of impulsive nature of XYY behavior.] XYY circumstances in Sirhan case pondered.
REPORTER: Jack Perkins
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