Correct Answer: Correct answer is: (C) Identical twins will express the behaviour more similarly than fraternal twins.
Exam Relevance: AP Psychology, MCAT, GRE Psychology
Difficulty: Moderate
Concept notes: Identical twins share 100% of their genetic material, while fraternal twins share approximately 50% of their genetic material. If heredity is a significant determinant of a specific behavior, identical twins would be expected to express the behavior more similarly than fraternal twins.
Common Mistakes: Students may mistakenly believe that environmental factors are the primary determinants of behavior, leading them to overlook the genetic similarities between identical twins.
Explanations: Identical twins have the same genetic makeup, so if a behavior is strongly influenced by genetics, they are more likely to express it similarly. Fraternal twins, who share only about half of their genes, would show less similarity in the expression of a behavior that is heavily influenced by heredity.
Option Analysis: - Option A: This option is incorrect because fraternal twins, who share only about half of their genes, would not express the behavior more similarly than identical twins, who share 100% of their genes.
- Option B: This option is incorrect because if heredity is an important determinant, there would be some similarity in the expression of the behavior, especially among identical twins.
- Option C: This option is correct because identical twins, who share 100% of their genetic material, would express the behavior more similarly than fraternal twins, who share only about 50% of their genetic material.
- Option D: This option is incorrect because identical twins would express the behavior more similarly than fraternal twins due to their shared genetic makeup.
Mnemonic: Identical twins, identical genes, identical behavior.
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Better question
Q44
Wilhelm Wundt opened the Institute for Experimental Psychology at the University of Leipzig in Germany in 1879.
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