Across
- 4. Unrelated organisms evolve similarities in the same environment.
- 7. Two species evolve in response to each other.
- 8. evolution One species separates into different species.
- 9. Structures that are similiar with same functions in different groups.
- 11. Structures that are similiar with different functions.
Down
- 1. The moving in or out of new alleles (forms of a gene) in a population.
- 2. Theory that states mitochondria and chloroplasts came from bacteria.
- 3. A change in the gene pool or population due to size change.
- 5. Survival of the fittest.
- 6. A group of the same species that changes during evolution.
- 8. He developed that idea of natural selection.
- 10. Any of several forms of a gene found on the same chromosome.
- 12. He believed that organisms could change how their bodies worked.