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Which repair process in E. coli uses visible light to repair thymine dimers? Which repair process in E. coli uses visible light to repair thymine dimers?

photoreactivation repair

nonhomologous end joining

homologous recombination (synthesis-dependent strand annealing)

base excision repair

nucleotide excision repair

Answer :

The bonds created during pyrimidine dimerization are repair during photoreactivation using the enzyme photolyase. The photolyase repair mechanism in E. coli binds a thymine dimer created by UV light.

Two-strand DNA damage in Escherichia coli(E. coli), which is mostly created during replication on template DNA with one-strand damage, is repaired by recombination with a homologous undamaged duplex, often the sister chromosome. DNA repair from exposure to UV light may be repaired by E. coli, which are DNA repair enzymes. Both the activation of these enzymes and the actual DNA repair process depend on visible light .

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