Final answer:
In eukaryotic cells, the polymerase delta subunit replaces the epsilon subunit. The delta subunit has high processivity and 3'-> 5' exonuclease activity.
Step-by-step explanation:
In eukaryotic cells, the polymerase delta subunit replaces the epsilon subunit. The delta subunit has high processivity and 3'-> 5' exonuclease activity.