When researchers conducted twin and adoption studies, they discovered that:
A) genetics was surprisingly influential in shaping a variety of behaviors.
B) the environment was surprisingly influential in shaping a variety of behaviors.
C) most traits were 50 percent genetic and 50 percent environmental.
D) most traits were 75 percent genetic and 25 percent environmental.

Question

Quizplus · Accepted Answer

Twin and adoption studies have shown that genetics plays a significant role in shaping a variety of behaviors. This means that the traits observed in individuals are largely determined by their genes rather than their environment.

When Researchers Conducted Twin and Adoption Studies, They Discovered That