SCIENCE: STAGES OF DEVELOPMENT.
WHICH STRUCTURE IS UNIQUE TO VERTEBRATES?
1. BACKBONE
2. LIMBS
3. BRAIN
4. SKING
1. backbone
2. go through the same developmental stages at different rates.
3. gill slits
4. They both have spines
WHICH STRUCTURE IS UNIQUE TO VERTEBRATES?
1. BACKBONE
2. LIMBS
3. BRAIN
4. SKING
2. go through the same developmental stages at different rates.
3. gill slits
4. They both have spines