DNA Technology

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Across
  1. 3. An exposed portion of DNA able to rejoin with DNA which has the complimentary bases
  2. 5. This process uses another antibiotic-resistant gene in the plasmid
  3. 7. Catalyses the production of DNA from mRNA
  4. 9. A section of DNA which is used to indicate the location of a gene or another section of DNA
  5. 12. There are many different types which each cut the DNA at a specific sequence of bases
Down
  1. 1. An enzyme which joins together nucleotides
  2. 2. A development in microorganisms of mechanisms which prevent antibiotics from killing them
  3. 4. Joins two sticky ends together
  4. 6. A nucleotide sequence which is recognised by a restriction endonuclease and to which it attaches
  5. 8. If a restriction endonuclease cuts between two opposite base pairs, leaving two straight edges
  6. 10. Circular lengths of DNA, found in bacteria but are separate to the to the bacteria DNA
  7. 11. Joins a cut off fragment of DNA into a carrying unit e.g. a plasmid