Xyy Theory Flashcards
(12 cards)
Define genetic theories
An explanation for criminal behaviour that emerged with modern criminality in 1700s which increased Contemporary researchers on genetic s of behaviour including anti social behaviour
What does xyy theory suggest
Crime can be an attribute to chromosomal abnormalities
Define chromosome
A structure in the nuclei. Hunamns have 46 chromosomes 44 of which determine the shape and constitution of body
How many chromosomes determine sex
Two
What are the diffrent sex chromosomes
Xx women
Xy men
What is xyy
Chromosomal abnormalities were there is an extra sex chromosome in men including two rather than one
What is xyy also known as
Super male
Why are criminologist interested in xyy men
Cause of the suggestion that there more inclined to have aggressive and violent behaviour comparable to men with single y
Example of research supporting this theory
Jacob et al 1965
What did Jacob et al find
Men with extra Y chromosome more aggressive than xy men
Seen through the over representation of xyy men in prison’s population
What was Jacob et als evidence
Found that 15 suffer per 1,000 in prison and 1 per 1,000 in general population
What type of theory is xyy
Genetic theory
