Multiple choice

Which of the following enzymes can join the broken ends of two DNA strands?

  1. Ligase

  2. Lipase

  3. Polymerase

  4. Endonuclease
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A Correct answer
Explanation

DNA ligase is the enzyme responsible for joining DNA strands by forming phosphodiester bonds between nucleotides. It plays a crucial role in DNA replication and repair processes. Ligase literally means 'to bind' or 'to join,' which is exactly its function in molecular biology.

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