Across
- 5. remains or traces of organisms from past
- 7. exist within a population,these variations can result in differential reproductive success.
- 8. similar DNA and amino acid sequences
- 10. similar early development
Down
- 1. structures w/little or no use
- 2. similar structures, function in similar environments
- 3. study of fossils
- 4. similar anatomy from common ancestors.
- 6. is change in species over time.
- 9. characteristics in related species can have underlying similarity even though functions may differ