Across
- 4. purine/pyrimidine exchange
- 7. substitution of similar nucleotide
- 8. Mutations are ____.
Down
- 1. ___regulator protein (activator) turns on transcription.
- 2. same sequence both ways
- 3. a group of structural genes plus sequences that control transcription.
- 5. What genes are encoding proteins
- 6. DNA wraps around a core of ___ histones.
- 9. _____regulator protein (repressor) blocks transcription.