Across
- 6. prokaryotic microoganisms
- 7. study of embryos
- 8. the reduction of a population; caused by changes in environment
- 12. dying out of a population
- 13. infectious
- 16. infectious cell and membrane are destructed
- 17. cells that have complex organelles
- 18. changing to fit an environment
- 19. single parent offspring
- 20. cells that lack a nucleus
Down
- 1. lost function; reduced in size
- 2. more desirable traits are created
- 3. structures that share ancestry and form
- 4. similar function; different structure
- 5. bacteria no longer respond to antibiotics
- 9. caused by differences in phenotype
- 10. change in a trait
- 11. results in differences in phenotype
- 14. arising species
- 15. production of a zygote; gametes meet gametes