Multiple Choice
Which of the following types of DNA damage occurs when a base is chemically converted into another base?
16. Cell Division
DNA Repair and Recombination
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Which of the following is not a type of DNA damage repair?
A
Mismatch repair
B
Base Excision repair
C
Lost nucleotide repair
D
Double Strand Break repair
Verified step by step guidance1
Understand the different types of DNA damage repair mechanisms: Mismatch repair, Base Excision repair, and Double Strand Break repair.
Mismatch repair is a system for recognizing and repairing erroneous insertion, deletion, and mis-incorporation of bases that can arise during DNA replication and recombination.
Base Excision repair is a cellular mechanism that repairs damaged DNA throughout the cell cycle. It is responsible for removing small, non-helix-distorting base lesions from the genome.
Double Strand Break repair involves the repair of breaks in both strands of the DNA helix, which can be caused by ionizing radiation or other factors. This repair can occur through homologous recombination or non-homologous end joining.
Identify that 'Lost nucleotide repair' is not a recognized or standard type of DNA damage repair mechanism, making it the correct answer to the question.
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