ABNORMAL BEHAVIOR
SCHIZOPHRENIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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That there is a single candidate gene responsible for Sz.
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That there were 108 separate genetic variations associated with increased risk.
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That the closer you are in genetic similarity to someone with Sz, the more likely you are to develop it.
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None of the above
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Detailed explanation-1: -Genetics. Schizophrenia tends to run in families, but no single gene is thought to be responsible. It’s more likely that different combinations of genes make people more vulnerable to the condition. However, having these genes does not necessarily mean you’ll develop schizophrenia.
Detailed explanation-2: -Because identical twins share the exact same DNA. In twin studies looking at schizophrenia, scientists have shown that if one identical twin has schizophrenia, then there is a 30-50% chance that the other twin will have it as well1.
Detailed explanation-3: -Family, twin and adoption studies have shown that genetic factors play a major role in the development of schizophrenia, which has an estimated heritability between 60-85 % [2], and a number of candidate risk genes have been shown to associate [3].
Detailed explanation-4: -Schizophrenia and heredity The risk jumps to 50 percent if both parents have been diagnosed with schizophrenia, while the risk is 40 to 65 percent if an identical twin has been diagnosed with condition.