Across
- 2. Body parts that are structurally similar in related species
- 3. Change in the genetic material of a cell
- 8. The millions of fossils that scientists collected
- 9. A structure that is reduced in size and has little or no function
- 11. His idea of evolution was WRONG
- 12. A trait or novel process that helps an organism survive and reproduce
- 13. A well-tested concept that explains a wide range of observations
- 14. Diagram of the relationship between the species
Down
- 1. The theory that species evolve during short periods of rapid change
- 4. The scientist who came up with the theory of evolution
- 5. Survive if better adapted to environment
- 6. The theory that evolution occurs slowly but steadily
- 7. The gradual change in species over time
- 9. A difference between individuals of the same species
- 10. The last shared common ancestor on the branching tree of evolution