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The Doomwatch team investigates the myth about the XYY chromosome after a schoolboy is expelled for possessing it.
Doomwatch
Season 2
5
January 18, 1971
50 minutes
Vivien Sherrard
Barbara Mason
John Nolan
Geoff Hardcastle
Olaf Pooley
Dr. Ensor
Colin Jeavons
Botting
Jean Trend
Dr. Fay Chantry
Barry Stokes
Stephen Franklin
Robin Chapman
Writer
Eric Hills
Director
Christopher Rowlands
Editor