Research on the Genetic and Environmental Influences on Body Weight

Multiple Choice

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.