Across
- 2. similar anatomy from common ancestors
- 6. similar early development
- 8. a body part that once had a function but no longer works
- 10. a change in species overtime
Down
- 1. similar DNA and amino acid sequences
- 3. A fossil that shows an intermediate state between an ancestral trait and that of its later descendants
- 4. similar structures, function in similar environments
- 5. study of fossils
- 7. remains or traces of organisms from past
- 9. characteristics in related species can have underlying similarity even though functions may differ