Explain in detail how are errors occurring during DNA replication corrected

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Explain in detail how are errors occurring during DNA replication corrected
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Step 1: DNA replication

In cell biology, DNA replication is a synthesis of making new double strands of DNA. The process is carried forward by different types of DNA polymerases. Though the polymerases are highly accurate, mistakes occasionally happen 1 in 109. 
DNA polymerases check the strand base by base to correct errors during replication, known as proofreading activity. During proofreading, the type of error determines the type of repair mechanism. 

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