Across
- 1. Enzyme that adds nucleotides to a growing DNA strand.
- 7. Process where ribosomes use mRNA to assemble amino acids into a protein.
- 8. Exchange of DNA between homologous chromosomes during meiosis.
- 10. Structure made of DNA and proteins that carries genetic information.
- 11. Process where a DNA sequence is copied into messenger RNA.
- 12. Molecule that carries genetic information in cells.
- 14. Shape of DNA formed by two complementary strands twisted together.
- 15. Three-base sequence on mRNA that codes for a specific amino acid.
- 17. Permanent change in the DNA sequence.
- 18. Mutation involving a change in a single nucleotide base.
- 19. Specific pairing of nitrogenous bases in DNA (A with T, C with G).
- 20. Type of cell division that produces genetically different haploid gametes.
Down
- 2. Small circular DNA molecule commonly found in bacteria.
- 3. Segment of DNA that codes for a functional product such as a protein.
- 4. Mutation caused by insertion or deletion that shifts the reading frame.
- 5. Proteins that DNA wraps around to help organise chromosomes.
- 6. Process by which DNA makes an identical copy of itself.
- 9. Enzyme that unwinds the DNA double helix during replication.
- 13. Basic unit of DNA consisting of a base, sugar and phosphate group.
- 16. Short DNA segments formed on the lagging strand during replication.