Genetics Unit Review

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Across
  1. 6. A three-base sequence on tRNA that pairs with a codon.
  2. 9. A cell containing two sets of chromosomes.
  3. 12. A reproductive cell such as a sperm or egg.
  4. 13. Short fragments of DNA formed on the lagging strand.
  5. 14. The process where ribosomes build proteins from mRNA instructions.
  6. 15. The enzyme that adds nucleotides to build a new DNA strand.
  7. 17. The spiral shape of the DNA molecule.
  8. 20. The enzyme that connects fragments on the lagging strand.
  9. 21. A picture of the chromosomes in a cell.
Down
  1. 1. RNA that carries genetic information from DNA.
  2. 2. Exchange of genetic material between homologous chromosomes.
  3. 3. The enzyme that “unzips” the DNA double helix.
  4. 4. The structure where proteins are assembled.
  5. 5. The molecule that stores genetic information in living organisms.
  6. 7. A cell containing one set of chromosomes.
  7. 8. A three-nucleotide sequence on mRNA that codes for an amino acid.
  8. 10. The type of cell division that produces four haploid cells.
  9. 11. The type of cell division that produces two identical body cells.
  10. 14. RNA that carries amino acids to the ribosome.
  11. 16. A tightly coiled structure made of DNA and protein.
  12. 18. The process of copying DNA before a cell divides.
  13. 19. The process of making RNA from DNA.