Across
- 2. (developmental homologies); similarities and differences exhibited by different organisms in the same stages of development
- 5. all species come from a common _______ making everything related
- 8. ________ records of lines of ancestry that are preserved through fossils locked in rock layers
- 9. abrupt or sudden changes in species after long period of stability; ________ equilibrium
- 10. _________ structures are similar in function but different in structure (example: butterfly wings vs bat wings)
- 11. species evolve slowly and gradually over time
Down
- 1. changes in species over time
- 3. ________ structures; remnants of an organ or structure that functioned in an earlier ancestor
- 4. __________ structures are similar in structure but have different functions (example: bones in animals)
- 6. DNA homologies; similarities in DNA, RNA and proteins in organisms that result from common ancestry
- 7. study of how and why plants and animals live where they do