A Strong Piece of Evidence That Genes Alone Do Not

question 99

Multiple Choice

A strong piece of evidence that genes alone do not cause the vast majority of mental disorders is that genetic studies

• A) rely too much on twin studies and not enough on adoption studies.
• B) rely too much on adoption studies and not enough on twin studies.
• C) typically find concordance rates for DZ twins far below 100 percent.
• D) typically find concordance rates for MZ twins far below 100 percent.

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