error detection

What Are Common Mechanisms of Error Detection?

Cells have evolved several mechanisms to detect and repair errors. These include:
Mismatch Repair (MMR): Corrects errors that occur during DNA replication.
Nucleotide Excision Repair (NER): Repairs bulky DNA lesions caused by UV light.
Base Excision Repair (BER): Fixes small, non-helix-distorting base lesions.
Homologous Recombination (HR): Repairs double-strand breaks using a sister chromatid as a template.
Non-Homologous End Joining (NHEJ): Repairs double-strand breaks without a template.

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