Which of the following suggests that drug abuse vulnerability may have a biological link?

Name: Which of the following suggests that drug abuse vulnerability may have a biological link?
Brand: Quizplus
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Question

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Twin studies suggest that drug abuse vulnerability may have a biological link because they show that identical twins, who share 100% of their genes, are more likely to both abuse drugs than fraternal twins, who share only 50% of their genes. This suggests that genes may play a role in drug abuse vulnerability.

Which of the Following Suggests That Drug Abuse Vulnerability May