Boa constrictors have tiny pelvic girdles and leg bones inside their bodies. Because these structures are nonfunctional ʺevolutionary baggage,ʺ they are called
A) analogous.
B) vestigial.
C) homologous.
D) convergent.
E) maladaptive.

Question

Quizplus · Accepted Answer

Vestigial structures are remnants of organs or structures found in the early ancestors of a species that have lost much or all of their original function in the course of evolution. Boa constrictors' tiny pelvic girdles and leg bones are examples of such structures, indicating their evolutionary lineage had limbs which have since become nonfunctional.

Boa Constrictors Have Tiny Pelvic Girdles and Leg Bones Inside