Across
- 6. structures don't have a common evolutionary origin but are similar
- 7. physical features
- 8. prevents fertilized egg from occurring
- 9. physical evidence of an organism that lived long ago
- 10. group of organisms that are all the same breed
- 11. study of embryos
- 13. structures structures with common evolutionary origins
- 14. selection mechanism for change in populations
- 16. resistance describes the decreased suseceptability of pest
- 17. structal adaptation that enables one species to resemble another species
- 18. the super continent
- 19. resistance describes the decreased suspectability of pest population
Down
- 1. breeding to breed a organism with another
- 2. adaptation that enables species to blend into their surroundings to avoid predators
- 3. evolution of structure, behavior, or internal process that enables an organism to respond to environmental factors and live to reproduce
- 4. pool all alleles of a population
- 5. structure structure in a present-day organism that no longer serves its purpose, but did to an ancestor
- 8. happens after fertilized eggs are formed
- 12. any change or random error in a DNA sequence
- 15. isolation physical barriers that divide a population