Across
- 2. The combined alleles of all individuals in a population
- 6. Study of the geographic distribution of plants and animals
- 8. Study of the form of living things
- 9. Small scale evolution affecting a single population
- 11. Preserved remains of organisms
- 12. Mechanism of evolution that occurs when random change in the allele frequency happens in the population
- 14. When there are no changes in the allele frequencies in a population over time, and thus evolution is not occurring
- 17. The process of biological change in populations over time that makes descendants genetically different from their ancestors
- 18. Nonfunctional genes
- 19. Group of organisms that can successfully interbreed and produce viable, fertile offspring
- 20. Mechanism of evolution that favors traits that potentially decrease survival, but increase likelihood of reproduction
- 21. Large scale evolution affecting a species across populations
Down
- 1. Study of prehistoric life through the fossil record
- 3. Mechanism of evolution where organisms with the “best” traits are favored and thus live longer and reproduce more, causing changes in the population over time so that the fittest survive
- 4. A feature that allows an organism to better survive in its environment
- 5. Study of chemical processes in living things
- 7. Study of embryo development
- 10. Species that exist only in one geographic region
- 13. A measure of how well an organism can survive in its environment
- 15. A type of divergent evolution occurring on a small scale over a shorter period of time
- 16. Mechanism of evolution caused by the movement of genes into or out of a population