57 NCEA Style Question: Cell Division

DNA replication occurs prior to mitosis and cell division. It produces new DNA by semi-conservative replication.

1. What is the purpose of DNA replication?

2. Explain how the parent DNA is copied by semi-conservative replication (you may use extra paper if required).

Your answer should include: • the units that make up DNA • the process of replication • a labelled diagram to support your answer