Genetics crossword

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Across
  1. 2. Two strands of DNA twisted together
  2. 3. The structure in cells that contains DNA
  3. 6. feature that an organism has that helps it survive in its environment
  4. 7. The passing of traits from parents to offspring hint starts with I!
  5. 9. The building blocks of DNA
  6. 10. The scientific name for the study of genes and heredity
Down
  1. 1. Cells containing half the usual number of chromosomes
  2. 4. The molecule that carries genetic information
  3. 5. Segments of DNA that code for specific traits
  4. 8. Different versions of a gene