What happens if you have an extra Y chromosome?

The extra X and/or Y chromosome can affect physical, developmental, behavioral, and cognitive functioning. Common physical features may include tall stature, lack of secondary pubertal development, small testes (hypogonadism), delayed pubertal development, and breast development (gynecomastia) in late puberty.

What is the XYY theory of crime?

A legal theory that holds that a defendant’s XYY chromosomal abnormality is a condition that should relieve him or her of legal responsibility for his or her criminal act.

How is XYY linked to criminality?

Results: XYY males showed a significantly higher frequency of antisocial behaviour in adolescence and adulthood and of criminal convictions than the controls, but multiple regression analysis showed this to be mediated mainly through lowered intelligence.

What happens with XXY chromosomes?

As XXY males enter puberty, they often don’t make as much testosterone as other boys. This can lead to a taller, less muscular body, less facial and body hair, and broader hips than other boys. As teens, XXY males may have larger breasts, weaker bones, and a lower energy level than other boys.

What does double Y chromosome mean?

XYY syndrome is a genetic condition that occurs when a male has an extra copy of the Y chromosome in each of their cells (XYY). Sometimes, this mutation is only present in some cells. Males with XYY syndrome have 47 chromosomes because of the extra Y chromosome.

Do you agree that criminal behavior is learned?

Criminal behavior is learned. This means that criminal behavior is not inherited, as such; also the person who is not already trained in crime does not invent criminal behavior. Criminal behavior is learned in interaction with other persons in a process of communication.

How do you know if you have XYY chromosomes?

To diagnosis XYY syndrome, doctors check a blood sample for the extra Y chromosome. Before birth, the condition may be found through karyotype test (chromosomal analysis) or noninvasive prenatal testing (NIPT). NIPT is done on the fluid surrounding the fetus, tissue from the placenta, or the blood from the mother.

Can a person have XXY chromosomes?

Klinefelter syndrome is a genetic condition in which a boy is born with an extra X chromosome. Instead of the typical XY chromosomes in men, they have XXY, so this condition is sometimes called XXY syndrome.