Twin studies - genetic

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Created by
Lola Biggs

Cards (8)

  • Monozygotic
    identical twins
  • dizygotic
    non identical (fraternal) twins
  • Concordance 

    in agreement or harmony.
  • twin studies support the contention that a heritable trait may increase risk for criminal behaviour.
  • identical twins are monozygotic (MZ) as they are from one fertilised egg.
  • dizygotic (DZ) twin are from two separate eggs and share 50% of their DNA.
  • when both of the twins share a characteristic there is said to be a concordance rate.
  • in order to asses the role of genetic and environmental influences , or the nature versus nurture debate , various twin studies have taken place and there is some evidence that suggest that genetic or nature may play a role in criminality to the extent that concordance in MZ twins is greater than that in DZ twins.