1. DNA polymerases
2. Principles of replication
3. Enzymes involved in replication
4. Replicating the lagging strand
5. Replicating the bacterial chromosome

1. The bacterial chromosome is replicated using theta replication. Review the material on theta replication in your textbook and in your notes. You should be able to answer the following questions:

• How many origins of replication does the bacterial chromosome have?
• How many replication forks are formed during theta replication?
• Draw a diagram of the chromosome as it looks when theta replication is about half complete. Label the replication forks, old and new DNA, and how the replication forks are "moving"

2. If you feel that you have mastered the concepts in this sub-unit, you can move to the next sub-unit, which explores gene expression in bacteria.