Across
- 3. Ability of bacteria to survive antibiotics
- 5. Ability to survive and reproduce successfully
- 9. Speciation caused by geographical isolation
- 15. Structures with the same evolutionary origin but different functions
- 16. Inherited characteristic that improves survival
- 18. Study of genes and heredity
- 19. Passing genetic information from parents to offspring
- 20. Differences between individuals of the same species
Down
- 1. Struggle between organisms for limited resources
- 2. Group of organisms that can interbreed to produce fertile offspring
- 4. Theory based on natural selection
- 6. Process that favours organisms with advantageous characteristics
- 7. Formation of a new species
- 8. Permanent change in an organism's DNA
- 10. Speciation without geographical isolation
- 11. Change in inherited characteristics of populations over time
- 12. Long period of little or no evolutionary change
- 13. Theory based on use and disuse
- 14. Group of individuals of the same species living together
- 17. Preserved remains or traces of organisms from the past