Every time a cell divides, it must make an exact copy of its DNA so that each new cell has the correct genetic instructions. This process is called DNA replication. In this activity, you will explore how DNA replicates, the role of key enzymes (helicase, primase, DNA polymerase III, DNA polymerase I, and ligase), and how nucleotides and base-pairing rules make accurate copying possible. Learn by watching a video, working through a replication simulation, answer questions, and produce a sc