Across
- 2. Random changes in allele frequencies in a population.
- 4. The molecule that carries genetic information.
- 6. An organism’s genetic makeup.
- 8. A testable explanation for an observation in science.
- 11. The process plants use to convert sunlight into chemical energy.
- 13. The basic unit of life.
- 14. A change in DNA sequence that can introduce new traits.
- 15. Differences in traits among individuals in a population.
- 17. The organelle known as the “powerhouse of the cell.”
- 19. Organelle where photosynthesis occurs.
Down
- 1. The process by which organisms with advantageous traits survive and reproduce more.
- 2. A segment of DNA that codes for a trait.
- 3. An organism’s ability to survive and reproduce.
- 5. A molecule that stores and transfers energy in cells.
- 7. The overall process of change in populations over generations.
- 9. A protein that speeds up chemical reactions in cells.
- 10. A trait that helps an organism survive and reproduce.
- 12. The environment plus all living organisms interacting in it.
- 16. A structure that builds proteins inside the cell.
- 18. One of two or more versions of a gene.