What is the difference between XXY and XYY?

Related questions

1. What is a YY?
2. Does having an extra Y chromosome make you a killer?
3. How does XXY happen?
4. Is Caster Semenya XY?
5. Is YY a female?
6. What is Xyy?
7. What would happen if someone has 2 Y chromosomes?
8. What is Superman Syndrome?
9. Do females have testes?
10. Can humans have 24 chromosomes?

Tags

1. #retarded
2. #slightly
3. #symptoms
4. #mosaic
5. #genotype
6. #often
7. #mentally
8. #problems
9. #extra
10. #inherit
11. #klinefelter
12. #males
13. #chromosomes
14. #least
15. #their
16. #generally
17. #usually
18. #chromosome
19. #syndrome
20. #extreme