Final answer:
A primosome physically associated with two DNA polymerase holoenzymes is called a replication fork. Helicase separates the DNA strands at the origin of replication, Primase synthesizes an RNA primer, and DNA polymerase III uses this primer to synthesize the daughter DNA strand.
Step-by-step explanation:
A primosome physically associated with two DNA polymerase holoenzymes is called a replication fork. A replication fork is formed when helicase separates the DNA strands at the origin of replication. Single-strand binding proteins bind to the single-stranded DNA to prevent the helix from re-forming. Primase synthesizes an RNA primer.
DNA polymerase III uses this primer to synthesize the daughter DNA strand. On the leading strand, DNA is synthesized continuously, whereas on the lagging strand, DNA is synthesized in short stretches called Okazaki fragments .Okazaki fragments are short stretches of DNA synthesized on the lagging strand during replication.