The correct order of events of DNA replication is as follows:
- DNA helicase unwinds DNA
- Replication fork is formed
- DNA polymerase attaches to the primer
- DNA polymerase adds nucleotides in the 5' to 3' direction
- Okazaki fragments are bound together by ligase
DNA REPLICATION:
- DNA replication is the process by which the DNA of a living organism is multiplied into two identical copies.
- DNA is a double-stranded molecule, hence, it must first be separated into two single strands in order to be replicated.
- The following are the orderly steps involved in DNA replication:
- An enzyme called DNA helicase unwinds DNA into single strands.
- A Y-shaped structure called replication fork is formed by the two single strands.
- DNA polymerase attaches to the primer, which is a short segment of RNA.
- DNA polymerase adds nucleotides to the leading strand of DNA in the 5' to 3' direction
- Okazaki fragments, which are small fragments of DNA are bound together by ligase enzyme and added to the lagging strand.
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