Which of the following directly demonstrates that genetics play an important role in obesity?
A)Scientists have determined that most of the time, a single gene appears to determine obesity.
B)Identical twins raised apart are about as similar in body mass as identical twins raised together.
C)Technological advances have decreased the need for daily physical activity in certain people who carry the obesity gene.
D)Obesity rates in the U.S.and Canada have increased rapidly in the past few years as a function of obese individuals producing offspring.

Question

Quizplus · Accepted Answer

Identical twins share the same genetic makeup, so if identical twins raised apart (in different environments) are about as similar in body mass as those raised together (in the same environment), it suggests that genetics play a significant role in determining body mass, including obesity. This is because the main variable that remains constant between the two sets of twins is their genetics, not their environment.

Which of the Following Directly Demonstrates That Genetics Play an Important