Across
- 4. environmental agents that cause mutations
- 8. a group of three nucleotides
- 9. change or error in DNA
- 10. segment of DNA
- 12. hold the two strands of DNA together
- 13. removing intron portions of the mRNA
- 15. transcribed in the nucleus
- 16. Universal nature of DNA
- 17. type of mutation in which one base is switched for another
Down
- 1. deletion or insertion changes the reading frame of the amino acid sequence
- 2. a chain of amino acids held together by a peptide bond
- 3. complementary to mRNA codon
- 5. decoding of an mRNA message into a protein
- 6. site of protein synthesis
- 7. scientist credited with the discovery of DNA
- 11. turning genes on and off
- 14. one sugar, one nitrogenous base, one phosphate