What Assumption Can Be Made If a Twin-Study Design Project

question 173

Multiple Choice

What assumption can be made if a twin-study design project reveals that the correlation between identical twins on a given trait is substantially higher than that between fraternal twins?

• A)Environmental factors are substantially responsible for the difference.
• B)Genetic factors are substantially responsible for the difference.
• C)Environmental and genetic factors are equally responsible for the difference.
• D)No assumption as to the responsibility of environmental or genetic factors for the difference can be made.

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