Our physiological structures have developed over a long period of evolutionary time; new structures are simply added to old ones, and thus these newer structures are _____ by what was there previously.

Question

Quizplus · Accepted Answer

The use of the word "constrained" implies that the newer structures have limitations or restrictions based on what was already there before. This is a key feature of how evolution works – new adaptations can only build upon existing ones, and thus are limited by what came before. The other options, developed, guided, and supported, do not capture this constraint.

Our Physiological Structures Have Developed Over a Long Period of Evolutionary