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The NHEJ pathway is used to rectify __________________ in the DNA.

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The NHEJ pathway is used to rectify __________________ in the DNA.

(a) nucleotide substitutions

(b) double-strand breaks

(c) single-strand breaks

(d) mismatched basepairs

The question was posed to me in class test.

The above asked question is from DNA Repair topic in chapter DNA Replication and Repair, Cellular Reproduction of Cell Biology

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The correct answer is (b) double-strand breaks

For explanation I would say: The nonhomologous end joining pathway (NHEJ) is a pathway to repair double-strand breaks in the DNA. These are introduced by agents such as ionization radiations, cancer drugs etc.

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