Research on the genetic and environmental influences on body weight has revealed that

A) the weight of adopted people correlates with that of their biological parents,not with that of their adoptive parents.
B) the weight of fraternal twins reared together is more highly correlated than the weight of identical twins reared apart.
C) obesity is somewhat less common among Americans today than 50 years ago.
D) identical twin men are more similar in weight than identical twin women.

Question

Yuanyi Zhang · Accepted Answer

Final Answer : A, Explanation :  Research on adoption studies has consistently shown that there is a stronger resemblance in weight between biological parents and their adopted children, compared to adoptive parents and their adopted children. This suggests that genetics play a significant role in body weight.Answer: CObesity rates have been steadily increasing in the United States for several decades. However, there has been a recent slight decrease in prevalence in some populations.Answers B and D are incorrect as they both provide inaccurate information. Fraternal twins share approximately 50% of their genes, whereas identical twins share 100% of their genes. Therefore, identical twins are more likely to have similar body weights, regardless of whether they were raised together or apart. Additionally, there is no evidence to suggest that identical twin men are more similar in weight than identical twin women.

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