Across
- 2. from migration of a small subgroup
- 5. related to timing
- 6. selection by farmers
- 8. the formation of species
- 11. organs that have lost ancestral function
- 12. determined by multiple genes
Down
- 1. frequency of allele, compared with others
- 3. natural selection that forms two peaks
- 4. preserved remains of an ancient organism
- 7. separated by barriers such as rivers
- 8. __________ for existence
- 9. inherited characteristic increases organism's chance
- 10. ability to survive and reproduce