Across
- 2. incompatibility due to reproduction organ
- 6. isolation where habitat preference lowers mating ability
- 7. evolution that occurs by chance
- 8. Selection depending on traits that improve organisms chances
- 12. dna that have genetic variation
- 13. change in population gene pool
- 16. isolation due to differences in courtship
- 18. structures in different species that are common in ancestry
- 19. isolation caused by earths physical terrain
- 21. disappearance of species
Down
- 1. ability of organisms chances of survival/reproduction
- 3. Selection under human direction
- 4. process of which new species are made
- 5. Organisms that are best adjusted have better chance of survival
- 9. structure that has same function but different construction
- 10. isolation when species don’t reproduce because of mating seasons are different
- 11. populations make independent changes
- 14. preserved remains or traces of organisms
- 15. a trait that improves a organisms ability to live
- 17. structure that was inherited but lost most its function
- 20. dna that codes traits