Across
- 4. body parts of organisms that are similar in structure and position but different in function
- 5. body parts that have lost their original function through evolution
- 7. body parts that perform a similar function but differ in structure
Down
- 1. study of the development of embryos from fertilization to birth
- 2. a feature shared by vertebrates in the early stages of development
- 3. study of similarities and differences among structures of different species
- 6. study of gene structure and function