Multiple choice

The role of enzyme DNA ligase in DNA replication is

  1. to add more nucleotides to the growing strand one at a time

  2. to open up the two DNA strands to expose template strands

  3. to remove incorrectly matched bases

  4. to join okazaki fragments to one another
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D Correct answer
Explanation

The role of enzyme DNA ligase in DNA replication is to bond okazaki fragments to one another.

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