Across
- 6. species has died out
- 7. organisms who are better adapted will survive
- 9. two parents needed
- 11. reduction in genetic variation
- 12. change in genetic variation frequency
- 13. single cell organism
- 15. formation of new species
- 16. versions of a gene
- 17. organism splits in half to reproduce
- 18. changing to adjust to environment
- 20. one parent needed
Down
- 1. event that causes population decrease
- 2. amount of different phenotypes
- 3. has a nucleus
- 4. no nucleus
- 5. bacteria form a resistance to antibiotics
- 8. difference in DNA among species
- 10. movement of genes in and out a population
- 14. production of offspring
- 19. difference in phenotype