A cladogram of vertebrate taxa marks the appearance of derived characters at internal nodes.
Which character is shared by the largest number of taxa shown?
- A
Bony skeleton
- Bcheck_circle
Jaws
- C
Tetrapod limbs
- D
Amniotic egg
Explanation
The character "jaws" is placed at the most basal node after lamprey, so it is shared by sharks, salmon, lizards, and hawks (4 taxa) - more than any other derived character on the tree.