[Campbell Biology P.804] Based on the provided diagram, what are the two key derived charact... | Practice Question

Based on the provided diagram, what are the two key derived characteristics that distinguish vertebrates within the chordates?

  • A: Notochord and dorsal, hollow nerve cord
  • B: Hox genes duplication and backbone of vertebrae
  • C: Hinged jaws and four sets of Hox genes
  • D: Four limbs and neck

Explanation

The diagram explicitly states that 'Vertebrates' are characterized by 'Hox genes duplication, backbone of vertebrae'. The other options refer to characteristics of broader groups like Chordates, or more specific subgroups like Gnathostomes or Tetrapods.