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9. Place the events in the correct order:
1. DNA polymerase adds nucleotides in the 5' to 3' direction
2.Replication fork is formed
3. DNA polymerase attaches to the primer
4. Okazaki fragments are bound together by ligase
5. DNA helicase unwinds DNA
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Samueladesida43idn

The correct order of events of DNA replication is as follows:

  1. DNA helicase unwinds DNA
  2. Replication fork is formed
  3. DNA polymerase attaches to the primer
  4. DNA polymerase adds nucleotides in the 5' to 3' direction
  5. 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:
  1. An enzyme called DNA helicase unwinds DNA into single strands.
  2. A Y-shaped structure called replication fork is formed by the two single strands.
  3. DNA polymerase attaches to the primer, which is a short segment of RNA.
  4. DNA polymerase adds nucleotides to the leading strand of DNA in the 5' to 3' direction
  5. Okazaki fragments, which are small fragments of DNA are bound together by ligase enzyme and added to the lagging strand.

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