Genetics

Question 1

What does Peter Trait’s case show

Answer 1

He beat a 77 year old woman to death and had XYY abnormality

Question 2

What did Thielgood find

Answer 2

Those with XYY had more violent interpretations of images

Question 3

What did Jacobs find

Answer 3

15:1000 ratio in prisons compared to 1:1000 outside

Question 4

What did brunner find

Answer 4

A dutch family with a history of violence all had a mutated MAOA gene in the locality of an X marker

Question 5

What did Mcguffin and Gottesman find

Answer 5

87% concordance rates in MZ twins compared to 72% in DZ twins

Question 6

Whats a problem with using twin studies

Answer 6

They share genes and environments so unsure which factor is causing the aggression

Question 7

Whats a problem with this theory

Answer 7

There is no account of nurture so it is reductionist

Question 8

Whats a positive application of this theory

Answer 8

Kids can be taken from violent families at a young age

Question 9

outline the XYY chromosome disorder

Answer 9

extra Y chromosome,
over represented in prisons,
above average weight,
below average intelect

Question 10

outline the MAOA mutation

Answer 10

A mutation of the X marker affects the production of MAOA so there are fluctuating testosterone levels