Unit 2: AC2.1 - Jacobs XYY Study - Genetic theories BIO Flashcards
Who does the extra Y hypothesis affect?
Men
How many are undiagnosed?
88%
Two key words that explain these men
Hypermasculine and supermales
Who did a study in a Scottish prison?
Jacobs
What did Jacobs find?
That there were more XYY men in a Scottish prison than in the general population
What are hypermasculine men prone to?
Violent henious crimes
What is no different between an XY and and an XYY man?
Testosterone levels
Someone with XYY may have…
Learning difficulties
What are stereotypical features of someone with XYY?
Tall and aggressive
Name a criminal who has used this as a defence
Richard Speck
What did Richard Speck do?
Murdered 8 nurses in Chicago, said he had XYY but never did.
What did Jacobs find?
That there were more XYY men in a Scottish prison than in the general population
What did Jacobs find?
That there were more XYY men in a Scottish prison than in the general population