DNA replication begins at a site called the origin of replication, forming a bubble, which is followed by a replication fork, where parental strands are unwound by helicase.
Initially, replication Forms a fork. The double-stranded molecule of DNA needs to be "unzipped" into two single strands before it can be copied.
Primer binding is step 2. The easiest part of replication is the leading strand.
Step 3 is elongation.
Step 4 is The final step.
As it moves along the DNA, a DNA helicase unwinds and separates double-stranded DNA. By severing hydrogen bonds between DNA nucleotide pairs, it creates the replication fork.
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