1. Comparing Embryology

2. SLIDE 2: Consider each of the following animals in the early stages of development.
Make observations about what you think is similar and what is different between all of these animals.

3. SLIDE 3: Here are the same animals again, now at a later stage of development. Make new observations about what is the same and what is different.

4. SLIDE 4: Have your previous observations changed now that the animals are more developed?
Discuss with your table partners and as a class.

5. SLIDE 5: Let’s look at the animals in their final stages of development.

6. Surprised?

7. SLIDE 7: What do you think it means to have all of these animals start out their life cycle in a very similar way?