The fact that the correlation in weight between identical twins reared apart is higher than that between fraternal twins reared together suggests that weight is
A) influenced more by genetics than by environmental factors.
B) influenced more by environmental factors than by genetics.
C) affected equally by genetics and environmental factors.
D) not affected by either genetics or environmental factor.

Question

Quizplus · Accepted Answer

The higher correlation in weight between identical twins reared apart suggests that genetics have a stronger influence on weight than environmental factors. This is because identical twins share 100% of their genetic makeup, while fraternal twins share only 50%. The fact that rearing them apart did not significantly impact their weight suggests that their genetic makeup was the primary determining factor.

The Fact That the Correlation in Weight Between Identical Twins