Which of the Following Statements About the Genetic Basis of Schizophrenia

question 157

Multiple Choice

Which of the following statements about the genetic basis of schizophrenia is FALSE?

• A) Monozygotic twins have a higher concordance rate than dizygotic twins.
• B) Twins are more likely to resemble each other if they think they are monozygotic than if they actually are.
• C) Schizophrenia is more common in the biological relatives of an adopted schizophrenic child than in the adoptive relatives.
• D) The prevalence of schizophrenia has been declining worldwide.

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Definitions:

Genotype

The genetic constitution of an individual organism, determining inherited characteristics.

Intellectual Abilities

The capacity to think, reason, solve problems, and adapt to new situations, often measured through intelligence quotient (IQ) tests.

Twin Studies

Research designs that compare monozygotic (identical) and dizygotic (fraternal) twins to assess genetic and environmental influences on physical and psychological traits.

Trait

A distinguishing quality or characteristic, typically one belonging to a person.