Question

what process repairs damage to a preexisting double helix? see concept 16.2 (page)
view available hint(s)
transformation
mismatch repair
operon repair
nucleotide excision repair
proofreading

Explanation:

• Transformation is the uptake of foreign DNA by a cell.
• Mismatch repair fixes errors in base - pairing that occur during DNA replication.
• There is no such process as operon repair (operons are related to gene regulation in prokaryotes).
• Nucleotide excision repair removes bulky lesions (like thymine dimers) from DNA.
• Proofreading is a function of DNA polymerases that corrects errors during DNA synthesis. But for damage to a pre - existing double helix (not during synthesis), nucleotide excision repair is the main process.

Answer:

nucleotide excision repair