Across
- 4. The process that transmits helpful traits to a generation of species.
- 7. Change in DNA
- 8. Part of DNA that codes for physical traits
- 9. The process that improves a species fitness
- 10. The disappearance of a species
- 11. The reproductive success of an organism in its environment
Down
- 1. The creation of a new species
- 2. When an animal or plant is modified by humans
- 3. Biological evolution that occurs by chance
- 5. An individuals role in their environment
- 6. Genetic change over time