Across
- 3. a segment of DNA that has the code for a specific trait.
- 5. the total physical appearance for an individual.
- 9. the storage area of a cell.
- 10. any change in the DNA sequence of a cell.
- 12. a nonliving part of an ecosystem Trait an organism's characteristics.
- 14. the basic unit of life.
- 15. anything that has mass or takes up space.
- 16. Membrane controls what comes in and out of the cell.
- 17. two paired alleles that are different from each other.
- 19. a group of similar cells that do the same sort of work.
- 21. a living or once living part of an ecosystem.
Down
- 1. the scientific study of heredity.
- 2. the role that an animal or plant species plays with in the environment.
- 4. to change from one form to another.
- 6. any living thing.
- 7. Energy energy stored in the bonds of molecules.
- 8. a response to a stimulus.
- 11. controls the activities.
- 12. one of a pair of genes that controls a certain Characteristic.
- 13. the average weather conditions in a certain place over time.
- 17. two paired alleles that are exactly the same.
- 18. Energy energy of light.
- 20. the place an organism lives that provides all of its needs.