Across
- 1. a threadlike strand of DNA that carries genes
- 3. the study of heredity and variation in organisms
- 5. part of DNA controlling physical characteristics and growth
- 6. the process by which a cell divides into two smaller cells
- 7. a part of the cell responsible for growth and reproduction
Down
- 2. organisms interacting with their physical environment
- 4. the region of the body between the thorax and the pelvis