Across
- 5. selection- the identification by humans of desirable traits in the plants and animals
- 7. live on earth originated from microorganisms
- 9. structures- skeletal elements of organisms that suggest a connection to a common ancestor
- 10. structures- structures that are similar in unrelated organisms
- 11. the classification of organisms
- 14. theory- believes organelles in eukaryotic cells were once prokaryotic micros
- 16. changing of a structure of a gene resulting in a variant form that may be transmitted to future generations
- 17. organic compounds that are fatty acids
- 19. equilibrium- hypothesis that evolutionary development marked by isolated episodes of rapid speciation between long periods of little or no change
- 20. - organic compounds occurring in foods and living tissues that must include sugars, salts, and cellulars
- 21. flow- also known as gene migration or allele flow
- 22. - nitrogenous organic compounds composed of amino acids
Down
- 1. structures- feature of behavior that no longer seems to have a purpose
- 2. - an organism's ability to survive and reproduce
- 3. the ingestion of bacteria
- 4. selection- the process whereby organisms better adapted to their environment tend to better survive
- 6. evolution- process where organisms not closely related independently evolve similar traits
- 8. organism that grows without air
- 12. nomenclature- two terms used to denote a species of living organisms
- 13. influence of closely related species on eachother
- 15. evolution- may occur as a response to changes in abiotic factors
- 18. - preserved impression/remains of a prehistoric organism