Across
- 4. All the genes and their alleles in the population
- 6. If population went unchecked, the earth would run out of living space and resoures
- 7. The amount of time it takes for half of a radioactive material to decay
- 8. Radioactive materials are used to date fossils based on how much of that material has decayed
- 10. Preserved evidence of an organism
- 11. Disproved the theory of spontaneous regeneration and replaced it with the theory of biogenesis
- 12. Serve no function
- 14. How often an allele occurs (percentage)
- 15. Similar in function but different in structure
Down
- 1. The survival of the fittest
- 2. Body structure is similar but different in function
- 3. Evolution by acquired traits
- 5. The age of a fossil is determined by comparing them to other layers of the earth
- 9. Proposed how evolution works
- 13. The boat Darwin used to travel