Who would personality psychologists expect to have the most similar personality traits?

Question

Quizplus · Accepted Answer

Monozygotic twins (identical) share 100% of their genetic material, whereas dizygotic (fraternal) twins share on average 50% of their genetic material, making it more likely for monozygotic twins to have the most similar personality traits. Siblings (option B) share about 50% of their genes, but not necessarily the same combination of genes, so they may have different personalities.

Who Would Personality Psychologists Expect to Have the Most Similar