Professor Tess compares the personality of twins born from the same fertilized egg with twins born from two separate fertilized eggs to study the genetic influence on personality. Professor Tess is employing the _____ methodology.

Question

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Professor Tess is using the twin study methodology, which involves comparing monozygotic (identical) twins and dizygotic (fraternal) twins to assess the influence of genetics versus environment on traits like personality.

Professor Tess Compares the Personality of Twins Born from the Same