Listed below are characteristics that serve as evidence of shared ancestry between fish and reptiles. Select the option that applies only to the embryos rather than adults.

Question

Listed below are characteristics that serve as evidence of shared ancestry between fish and reptiles. Select the option that applies only to the embryos rather than adults.

Answer 1

Both fish and reptiles have:

1. A similar spinal cord structure
2. Gills
3. A two-chambered heart
4. A notochord
5. A post- tail

Only option 5, a post- tail, applies specifically to embryos rather than adults.