When One Identical Twin Is Schizophrenic The Other Is More Likely To Be Schizophrenic As Compared With The General Population?

When One Identical Twin Is Schizophrenic The Other Is More Likely To Be Schizophrenic As Compared With The General Population? Why? Because identical twins share the exact same DNA. The twin studies showed that if one identical twin has schizophrenia, then there is a 30-50% chance that the other twin will have it as well.