Which technique is frequently used by behavioral geneticists?

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Comparing monozygotic (identical) and dizygotic (fraternal) twins is a frequently used technique by behavioral geneticists. This allows them to estimate the heritability of certain traits and behaviors by comparing the similarity of identical twins (who share 100% of their genes) to fraternal twins (who share only 50% of their genes on average). The greater the similarity between identical twins, the more likely the trait has a genetic basis.

Which Technique Is Frequently Used by Behavioral Geneticists