DNA and Chromosomes

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Across
  1. 1. A chain made from building blocks.
  2. 3. One side of the DNA ladder.
  3. 7. The order of letters or things.
  4. 8. A part of DNA with trait information.
  5. 10. The way letters are placed.
  6. 12. One DNA letter: A, T, C, or G.
  7. 13. All the DNA letters make this.
  8. 14. One step across the DNA ladder.
  9. 15. A living thing with a body and organs.
Down
  1. 2. To show or make something seen.
  2. 4. Two sides twist like a ladder.
  3. 5. The material that holds instructions for life.
  4. 6. A small unit of living things.
  5. 9. A feature of a living thing.
  6. 11. A tiny living thing. Many kinds have DNA.