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