Across
- 3. the alternative forms or versions of a gene found on the same place on the chromosome
- 4. when organisms move from one population to another
- 6. when two or more species share an ancestor species
- 7. The theory that evolution occurs slowly but steadily
- 11. the changing in the frequency of a gene brought about by chance
- 13. The taxonomic rank below a genus.
- 14. The preserved remains of an organism, such as bones or shells
- 15. the children or reproductive byproducts of an organism
Down
- 1. the only accepted theory about a particular phenomenon
- 2. a change in what organisms look for in a mate
- 5. the subset of individuals of the same species that live in the same geographic area and can interbreed with one another
- 8. a segment of DNA on a chromosome that codes for a specific trait
- 9. a change in the structure of a gene
- 10. how well an organism can survive and reproduce in its environment
- 12. a scientist famous for his theories about evolution