What have twin studies revealed about the traits of monozygotic twins compared with the traits of dizygotic twins?
A) Monozygotic twins tend to be more concordant than dizygotic twins.
B) The two types of twins are equally concordant.
C) One monozygotic twin is usually more concordant with other (non-twin) siblings than with the other monozygotic twin.
D) Two monozygotic twins are less concordant than two dizygotic twins.

Question

Quizplus · Accepted Answer

Twin studies have consistently shown that monozygotic twins tend to be more concordant for various traits, including personality, intelligence, and physical characteristics, than dizygotic twins. This suggests that genetic factors play a larger role in the development of these traits than environmental factors.

What Have Twin Studies Revealed About the Traits of Monozygotic