What Was the Main Point of the Discussion of Three

Multiple Choice

What was the main point of the discussion of three pairs of twins and their athletic ability in the introduction of this chapter?

A) Genetic influences on behaviour account for more than 80 percent of the variance between identical twins.
B) Genes are more predictive of early development,whereas later development is more influenced by environmental factors.
C) Environmental influences on behaviour can negate the effects of genetic similarity.
D) The equation for predicting development is much more complex than simply examining the influence of genes plus environment.