... In reality, very few "mental illness" has been linked to genetics, and the causes of "schizophrenia" are still unknown to biologists.
The ideal test to determine if something is genetic is a twin-study ...
Quote from: nhs.uk
... studies have shown that if one identical twin develops schizophrenia, the other has a 48% risk, even if they are raised separately.http://www.nhs.uk/news/2014/07July/Pages/Study-offers-insights-into-genetics-of-schizophrenia.aspx
The incidence of schizophrenia in the general population is around 1% .
I think that genetic disorders could not explain the complex behavior generated from the unconscious mind.
Genes have created all the organs in all the animals which have ever lived on Earth, why are genes not sufficient to build and run a human brain ?.
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