Across
- 4. Formation of new spices
- 7. Similar because a common ancestor
- 8. The ability to reproduce
- 11. They change over time because of a prehistoric separation
- 12. When a spices is in the process or currently the population is dating out
- 13. When the remains of a prehistoric ancestor gets preserved in the ground
- 14. Variation in gene
- 16. To be selected
- 18. A change in the genes
- 19. To deal with genes
- 20. Same but different and not inherited
- 21. Inherited from ancestors and Dosent change from original use
Down
- 1. When the way something acts depends if they reproduce
- 2. when the species changes because a split in there population
- 3. If they live in different habitats they can’t reproduce
- 5. When a gene selection has an outside force acted upon it.
- 6. only the best live
- 9. When a difference in a behavior or mating season is different
- 10. physical barriers serperates them
- 15. from monkeys to humans
- 17. To change according to the environment
- 19. The blueprint for humans