Across
- 2. The only type of information passed onto offspring
- 3. A group of organisms that can produce fertile offspring
- 6. These are not made by natural selection
- 8. Theory that states life changes over time
- 9. Variations are differences in this type of trait
- 14. Structures that are in different species but are similar
- 15. Idea that a species changes over time
- 18. What people used to think of variations as
- 19. What Darwin was amazed by during his scientific journey
- 20. The study of the geographic distribution of organisms
Down
- 1. Idea that one species can turn into another
- 4. The selective agent in nature
- 5. Something that exists in nature and results in differences in genetic material.
- 7. Structures that appear to be useless
- 10. Structures that perform the same function but aren't similar in structure
- 11. Scientists can compare species at this level
- 12. Darwin's profession
- 13. preserved remains of organisms
- 16. Overpopulation will lead to organisms engaging in this for food
- 17. Type of selection where humans bred organisms for desirable traits