3. The model shows DNA replication.
5"
DNA Replication
Leading strand
X Th
Lagging strand
DNA polymerase
3
Helicase
DNA polymerase
Original DNA
44
a. Use the model to explain how a DNA molecule is replicated. Include the
terms leading strand, lagging strand, DNA polymerase, and helicase in your
explanation. (4 points)
b. What is the structure labeled X in the model, and how are these structures
involved in DNA replication? (2 points)