Across
- 1. selection force driving populations together
- 2. selection force of nature that causes populations to evolve
- 5. isolation isolation based on organisms behavior
- 9. structures structures that evolved from a common ancestor
- 10. flow genes migrate from one population to another
- 11. isolation reproductive system that deals with time
- 12. changing of a structure of a gene
- 14. isolation able to reproduce among the same species
Down
- 1. new species form
- 3. structures a resemblance in structures that aren't related
- 4. structures part of the body that isn't useful anymore
- 6. selection force driving populations apart
- 7. selection organisms better adapt to their environment
- 8. isolation isolation due to a physical land barrier
- 13. drift change in genes frequency