Asked by jerod simons on May 06, 2024

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The presence of schizophrenia was measured in both monozygotic (MZ) and dizygotic (DZ) twins. The correlation between the MZ twins was .50 and the correlation between the DZ twins was .30. What is the heritability coefficient for schizophrenia?

A) .80
B) .20
C) .40
D) .65

Schizophrenia

A chronic and severe mental disorder that affects how a person thinks, feels, and behaves, often characterized by delusions, hallucinations, and disorders in thought processes.

Heritability Coefficient

A numerical estimate ranging from 0 to 1 that indicates the extent to which genetic variance influences an individual's trait in a given population.

Monozygotic Twins

Twins that are genetically identical, having developed from a single fertilized egg that split into two embryos.

  • Master the idea of heritability and how its quantification is achieved.
  • Decode the genetic factors influencing specific psychological and behavioral traits.
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KD
Karen DaviaMay 11, 2024
Final Answer :
C
Explanation :
The heritability coefficient for schizophrenia can be estimated using the formula 2(rmz - rdz), where rmz is the correlation for monozygotic twins and rdz is the correlation for dizygotic twins. Plugging in the given values, we get 2(.50 - .30) = .40.