Question Detail
Question
The evolutionary transition from reptilian to mammalian jaw structure involved:
Correct Answer
Option B is the correct answer.
Detailed Explanation
The transition from reptilian to mammalian jaw structure involved the reduction and eventual incorporation of the articular and quadrate bones into the middle ear as the malleus and incus, while the dentary bone became the dominant jaw element.
Hint
These jaw bones in reptiles evolved into hearing structures in mammals.