Across
- 2. – "Differences within species"
- 3. – "Preserved remains of organisms"
- 7. – "Father of genetics"
- 9. – "Trait enhancing survival"
- 10. – "Islands key to Darwin’s study"
- 12. – "Natural selection theorist"
- 13. – "Study of early development"
- 15. – "Process favoring certain traits"
Down
- 1. – "Source of genetic variation"
- 4. – "Formation of new species"
- 5. – "Organism’s genetic makeup"
- 6. – "Disappearance of species"
- 8. – "Inheritance of acquired traits"
- 11. – "Darwin’s co-developer"
- 14. – "Ability to survive and reproduce"