How Does the DNA Mismatch-Repair Mechanism in Bacteria Recognize Which

question 26

Multiple Choice

How does the DNA mismatch-repair mechanism in bacteria recognize which base is the correct one (i.e., the template strand) following DNA replication?

• A) The Uvr protein complex recognizes an adjacent pyrimidine dimer.
• B) The mismatch distorts the shape of only the newly synthesized DNA strand.
• C) The incorrect base is methylated immediately after DNA replication.
• D) The mismatch correction enzyme recognizes the unmethylated state of the newly synthesized DNA segment.
• E) The mechanism is unknown.

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