The helicase enzyme initiates the DNA process by unwinding the double helix. If it was missing, the DNA would not be able to replicate as the helix structure would not open. The next step of DNA Replication is the binding of RNA primase in the the initiation point of the 3'-5' parent chain. RNA primase can attract RNA nucleotides which bind to the DNA nucleotides of the 3'-5' strand due to the hydrogen bonds between the bases and also provide a starting point for DNA polymerases to extend from. Without it, the DNA nucleotides would not have something to bind to and to start the DNA synthesis. After that, the elongation process occurs. The 3'-5' daughter strand -that uses a 5'-3' is called leading strand because DNA Polymerase reads the template