Fact 1: Vertebrates are all chordates that have a backbone.

Fact 2: Later on, vertebrates evolved jaws.

Given the two facts above, answer the question "all chordates have what?" with the following options: 
- food and shelter
 - aerobic capacity
 - flow of electrons
 - gastropod shells
 - a cuticle
 - evolved jaws
 - layers of fat
 - sensory neurons


 

      evolved jaws   