the DNA is replicated
Solution
DNA replication is a biological process that occurs in all living organisms and is the basis for biological inheritance. Here are the steps:
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Initiation: The DNA double helix is unwound by the enzyme helicase, which separates the two strands of DNA at the replication fork.
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Elongation: The enzyme DNA polymerase adds new DNA nucleotides to the 3' end of the DNA strand, following the base pairing rules (A with T, and G with C). This process occurs in the 5' to 3' direction.
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Leading Strand Synthesis: The leading strand is synthesized continuously in the 5' to 3' direction.
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Lagging Strand Synthesis: The lagging strand is synthesized discontinuously in the 5' to 3' direction. This results in the formation of Okazaki fragments.
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Termination: Once the entire DNA molecule has been replicated, the process is terminated. The replication forks meet and the newly synthesized DNA molecules are separated, resulting in two identical DNA molecules.
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Proofreading and Repair: DNA polymerase also has proofreading ability. It can remove incorrect nucleotides and replace them with the correct ones. This ensures the accuracy of DNA replication.
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Joining of Okazaki fragments: The enzyme DNA ligase joins the Okazaki fragments together to form a single DNA strand.
This is a simplified explanation of the process. The actual process is much more complex and involves many more proteins and enzymes.
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