Across
- 1. a variety of organism created by artificial selection
- 5. describes how well an organism can survive & reproduce in an environment
- 6. one of two or more forms that a gene could take
- 11. process by which organisms that inherited advantageous traits tend to reproduce more successfully (2 words)
- 12. a characteristic of an organism
- 13. occurs when all members of a species have died out
- 14. segment of DNA that determines a trait
- 15. an inherited trait that helps an organism survive
Down
- 2. change in the inherited traits of a population of organisms that occur over many generations
- 3. a structure in the cell that is composed of DNA
- 4. the selection by humans of animals, plants, or other organisms to breed together (2 words)
- 7. genetic makeup of an organism
- 8. a change in a gene; main source of variation
- 9. physical appearance of an organism
- 10. changes to the trait of a population