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Questions and Answers
What is the frequency of mismatched bases incorporated into new DNA during the process of replication?
What is the frequency of mismatched bases incorporated into new DNA during the process of replication?
- About 10−4 to 10−5 (correct)
- Exactly one error per billion nucleotides
- Less than one error per billion nucleotides
- About 10−2 to 10−3
What is the main role of mismatch-repair enzymes in DNA replication?
What is the main role of mismatch-repair enzymes in DNA replication?
- To prevent any errors from occurring in DNA replication
- To increase the error rate in DNA replication
- To cut out a section of the newly synthesized strand and fill the gap with new nucleotides (correct)
- To create unpaired loops in the DNA
How are incorrectly paired bases detected and corrected in DNA?
How are incorrectly paired bases detected and corrected in DNA?
- By mismatch-repair enzymes (correct)
- By proofreading enzymes
- By DNA polymerases
- By replication enzymes
What must mismatch repair have in order to work effectively?
What must mismatch repair have in order to work effectively?
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What is the purpose of filling the gap with new nucleotides in DNA replication?
What is the purpose of filling the gap with new nucleotides in DNA replication?
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