Ruth and Debbie are identical twins who were raised by the same family. Vince and Frankie are identical twins who were separated at birth and raised by different families. According to research on the heritability of personality traits, Ruth's and Debbie's personalities are statistically

Likely to be as similar and dissimilar to one another as are Vince's and Frankie's personalities

Explanation:

According to research on the heritability of personality traits, it was discovered that behavioral traits are influenced by gene and are hence heritable. This is regardless of whether the twin were raised by the same family or not. As long as they are twin and share same parents, their personality traits are likely to be be as similar and dissimilar to one another.

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they protect against unsafe foods and medicines being sold

explanation: