XYY theory

• What does the XYY theory suggest ?

  That crime might be attributable to a chromosomal abnormality
• what is XX ?

  Woman
• What is XY ?

  Man
• What are XYY men chromosomes sometimes referred as ?

  Supermale syndrome
• Why are XYY men referred as super males ?

  because of the extra Y chromosome suggesting that males are more violent and aggressive.
• What serial killer is said to have the XYY syndrome ?

  John Wayne Gacy