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Types of Nucleases Functions A. Exonucleases 1. Removes nucleotides from ends of DNA B. Endonucleases 2. Cuts DNA at specific internal positions C. Restriction Endonucleases 3. Joins DNA fragments together D. DNA Ligases 4. Restricts growth of bacteriophage

Options

  1. AA - 2, B - 1, C - 4, D - 3
  2. BA - 1, B - 2, C - 3, D - 4
  3. CA - 2, B - 1, C - 3, D - 4
  4. DA - 1, B - 2, C - 4, D - 3

Correct answer

D. A - 1, B - 2, C - 4, D - 3

Step-by-step solution

Exonucleases remove nucleotides from the ends of DNA, endonucleases cut DNA at specific internal positions, restriction endonucleases were historically used to restrict the growth of bacteriophage, and DNA ligases join DNA fragments together

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