G543 - Turning To Crime: Biology - Brunner

Question 0

What experiment was used?

Answer 0

Quasi

Question 1

What was the aim?

Answer 1

To explain the behaviour of a large family in the Netherlands where the males are affected by borderline mental retardation and abnormal violent behaviour

Question 2

How many of the males from the family did the study closely examine?

Answer 2

5 affected males

Question 3

What was the data collected from?

Answer 3

Urine samples

Question 4

How long was data collected for?

Answer 4

24-hours

Question 5

What did the urine tests show a deficit of?

Answer 5

Monoamine oxidase A (MAOA)

Question 6

Where was a mutation identified?

Answer 6

On the X chromosome of the gene responsible for the production of MAOA

Question 7

What is MAOA involved in?

Answer 7

Serotonin metabolism

Question 8

What is a defect in the gene responsible for the production of MAOA likely to be responsible for?

Answer 8

Mental retardation in the family and this May account for their violent behaviour

Question 9

What did Brunner fundamentally conclude about the MAOA deficiency?

Answer 9

It accounted for their inability to control aggression