Which of the following represents the strongest evidence that two of the three middle ear bones of mammals are homologous to certain reptilian jawbones?
A) They are similar in size to the reptilian jawbones.
B) They are similar in shape to the reptilian jawbones.
C) The mammalian jaw has fewer bones than does the reptilian jaw.
D) These bones can be observed to move from the developing jaw to the developing middle ear in mammalian embryos.

Question

Quizplus · Accepted Answer

The movement of these bones from the developing jaw to the developing middle ear in mammalian embryos provides direct developmental evidence of their evolutionary origin, supporting the hypothesis of homology with reptilian jawbones.

Which of the Following Represents the Strongest Evidence That Two