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DNA polymerase checks the DNA for errors.
Proofreader enzymes, such as DNA polymerases, function to detect and correct errors that may occur during DNA replication. They help maintain the accuracy of genetic information by identifying mismatched base pairs and replacing them with the correct ones. This process helps prevent mutations and ensures the fidelity of DNA replication.
Cells have various mechanisms to ensure accurate replication and minimize errors. These include proofreading by DNA polymerase, DNA repair pathways, and cell cycle checkpoints that monitor DNA integrity. Additionally, telomeres at the ends of chromosomes help prevent loss of genetic information during replication.
Mutations
The process of duplicating a DNA molecule is called DNA replication. This process involves unwinding the double helix structure of the DNA molecule, synthesizing new strands complementary to the original strands, and proofreading for errors. DNA replication ensures that each daughter cell receives an identical copy of the genetic information during cell division.