Genetics Final

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