Multiple choice

What is the role of DNA Polymerase I?

  1. To replace the DNA primer with RNA nucleotides

  2. To join together the Okazaki fragments on the leading strand

  3. To join together the Okazaki fragments on the lagging strand

  4. To replace the RNA primer with DNA nucleotides
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

DNA Polymerase I is specifically responsible for removing the RNA primers used during replication and replacing them with the appropriate DNA nucleotides. DNA Polymerase III is the primary enzyme for elongation.

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