Sally and Marie are MZ twins who have performed very similarly to each other on an intelligence test. For this trait, we could say that this set of twins is
A) concordant.
B) discordant.
C) heritable.
D) reliable.
E) consistent.

Question

Quizplus · Accepted Answer

Concordant refers to the phenomenon where twins (especially monozygotic or identical twins like Sally and Marie) show similar traits or behaviors, such as scoring similarly on an intelligence test. This similarity is expected due to their shared genetic makeup.

Sally and Marie Are MZ Twins Who Have Performed Very