In the 1920s Behavioral Geneticists Realized That Research on "Separated

question 32

Multiple Choice

In the 1920s behavioral geneticists realized that research on "separated" twins could be used to determine the "heritability" of any measurable trait,but only if certain conditions were met.Which of the following was NOT one of those conditions?

• A) The twins must come from a representative sample of biological parents.
• B) The twins must be dizygotic.
• C) The twins must have been randomly placed in a representative sample of adoptive foster homes.
• D) The twins must have been separated completely and very early.

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