A Major Question Address by Comparing Monozygotic and Dizygotic Twins

question 196

Multiple Choice

A major question address by comparing monozygotic and dizygotic twins, or comparing adopted children with their adoptive and biological parents, is:

• A) To what degree has natural selection influenced human evolution?
• B) Does a single gene or do multiple genes influence complex behavior?
• C) Are psychological disorders homozygous or heterozygous conditions?
• D) To what extent do genes, the environment, and their interaction influence behavior?