Across
- 2. segment of mRNA that is removed
- 4. type of bond between nitrogen bases in DNA
- 7. region where RNA polymerase attaches and begins transcription
- 9. addition of a molecular group to DNA molecules that inhibits gene expression
- 11. describes process by which DNA genes are expressed
- 13. monomer of nucleic acids
- 14. set of three nucleotide bases
- 15. process that creates proteins from mRNA
- 18. small, circular, self-replicating extra DNA strand
- 19. when chromosomes do not split properly during meioses
Down
- 1. operons that are turned on with inactivation of repressor, often for catabolic pathways
- 3. when genetic material is picked up from the environment by competent cells
- 5. RNA virus, uses reverse transcriptase
- 6. worked with Crick to find structure of DNA
- 8. technique using gel and electrical current to separate DNA by size
- 10. enzymes that cut up DNA at specific locations
- 12. strand of DNA that is replicated continuously
- 16. enzyme that binds together Okazaki fragments
- 17. unit of functional DNA containing related genes controlled by single promoter region, usually in bacteria