Across
- 1. Where things are living
- 4. Surviving organisms cause change in population over time through reproduction acting on heritable traits
- 5. Sets of genes in a population
- 7. Unrelated species with similar traits due to the environment
- 8. Occurs at a slow rate Ex: changes in climate
- 10. Non-Random selection
- 12. The study of pre-historic life
- 15. Bursts of changes in a species
- 16. Related creatures that can produce offspring
- 19. Biological change that makes descendants differ from their ancestors
- 22. Catastrophic event changes the environment suddenly
- 24. Species in an area
- 25. The remains of pre-historic populations
- 26. Similar anatomical structures that serve different purposes
- 27. A change in gene frequency over time
Down
- 2. The study of different structures of organisms
- 3. Forming of a new species by evolution from pre-existing species; Needs Isolation
- 6. Same traits caused by the environment
- 9. Two organisms change in response to each other forming a specialized relationship
- 11. Random change in gene
- 13. A feature that allows an organism to better survive in it's environment
- 14. Today's different species coming from common ancestry
- 17. The study of embryonic development of organisms
- 18. The Study of the chemical processes in organisms Ex: DNA and Amino Acids
- 20. Structures with little or no function
- 21. Slow changes over a long period of time
- 23. Migration of genes in or out of a population