Across
- 5. a difference in a group of organisms
- 6. beneficial; in your favor
- 8. process by which an animal becomes fitted into an environment
- 9. animals with spine
- 10. a historic organisms preserved in petrified form or mold
- 11. remains and traces of ancient organism
- 12. the genetic constitution of an individual organism
- 14. animals without spine
- 16. it favors the intermediate variants.
- 19. study of similarities and differences in the anatomy of different species.
- 20. OF LIFE all life is related
- 22. a form of evidence for evolution
- 23. layers of rock
- 24. the set of observable characteristics of an individual
- 25. believed in differential survival and natural selection
- 26. change over time
Down
- 1. describes how a group of organisms share a common ancestor
- 2. determines the age of a fossil by the amount of carbon-14
- 3. determine how closely related organisms are
- 4. believed in desire or will to change; passing of acquired characteristics to offspring
- 7. structures in different species with same structures
- 13. better adapted organism survive in the environment
- 15. extreme phenotype is favored over other phenotypes
- 16. a phenomena that changes the fitness of living organisms within an environment
- 17. a change in genetic sequence
- 18. layer of rock are able to tell us the age
- 19. disguising in an environment
- 21. a number of organisms living somewhere
- 27. Last Universal Common Ancestor