Question

DNA damage can occur as a result of exposure to chemicals or ultraviolet radiation. What happens during nucleotide excision repair of damaged DNA? Enzymes cut out the damaged gene, copy the same gene from the homologous chromosome, and insert the copy. Enzymes unwind the DNA, cut out a section on one strand that contains the DNA damage, and resynthesize the section with the correct DNA sequence. Enzymes delete an incorrect DNA sequence, pull the gap closed, and join the bases on either side of the gap together. Enzymes identify a mismatched base in a DNA strand, remove the incorrect base, and insert the correct base.

          DNA damage can occur as a result of exposure to chemicals or ultraviolet radiation. What happens during nucleotide excision repair of damaged DNA?
Enzymes cut out the damaged gene, copy the same gene from the homologous chromosome, and insert the copy.
Enzymes unwind the DNA, cut out a section on one strand that contains the DNA damage, and resynthesize the section with the correct DNA sequence.
Enzymes delete an incorrect DNA sequence, pull the gap closed, and join the bases on either side of the gap together.
Enzymes identify a mismatched base in a DNA strand, remove the incorrect base, and insert the correct base.

DNA damage can occur as a result of exposure to chemicals or ultraviolet radiation. What happens during nucleotide excision repair of damaged DNA?
Enzymes cut out the damaged gene, copy the same gene from the homologous chromosome, and insert the copy.
Enzymes unwind the DNA, cut out a section on one strand that contains the DNA damage, and resynthesize the section with the correct DNA sequence.
Enzymes delete an incorrect DNA sequence, pull the gap closed, and join the bases on either side of the gap together.
Enzymes identify a mismatched base in a DNA strand, remove the incorrect base, and insert the correct base.

Added by Amy H.

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