Problem:

I just wanted to understand the basic steps behind the replication of the lagging strand of DNA:

Have helicase unwind it first

• DNA Primase lays down RNA primers in fragments, called Okazaki fragments
• DNA polymerase III goes through and corrects all the mistakes (essentially replace the Uracil with Thymine)
• DNA polymerase I goes through and removes RNA primer
• DNA ligase hooks up each of the 5' to 3' end fragments

Required:

Question: Is this the correct order of steps?

Question: Does the leading strand need any RNA primer or does the DNA polymerase just start and go to the end without any help?