genetic explanations

• what has research been done through\?

  twin and family studies- to what extent do genes play their part over environment
• what do monozygotic twins share?

  • MZ = identical. share 100% of their genes
  • share similar environments
  • if one twin has OCD, the other should also have it
• MZ TWINS: What did Miguel claim?

  When one MZ twin has OCD, the other has a 53-87% chance of developing (concordance ratw)
• what do DZ/FRATERNAL TWINS SHARE?

  • share 1/2 of genes
  • miguel - sugestsd they have a 22-47% of both suffering
  • there environment will be seen as the same, so therefore the difference must be due to rhe greater genetic similarity in monozygotic twins over dizygotic twins
• What is genetics the study of?

  genes and inheritance
• what condition does OCD seem to be?

  a polygenic condition
• what are there several of?

  candidate gens