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1. Introduction to Genetics51m
2. Mendel's Laws of Inheritance3h 37m
3. Extensions to Mendelian Inheritance2h 41m
4. Genetic Mapping and Linkage2h 28m
5. Genetics of Bacteria and Viruses1h 21m
6. Chromosomal Variation1h 48m
7. DNA and Chromosome Structure56m
8. DNA Replication1h 10m
9. Mitosis and Meiosis1h 34m
10. Transcription1h 0m
11. Translation58m
12. Gene Regulation in Prokaryotes1h 19m
13. Gene Regulation in Eukaryotes44m
14. Genetic Control of Development44m
15. Genomes and Genomics1h 50m
16. Transposable Elements47m
17. Mutation, Repair, and Recombination1h 6m
18. Molecular Genetic Tools19m
- Genetic Cloning
  9m
- Methods for Analyzing DNA
  9m
19. Cancer Genetics29m
- Overview of Cancer
  21m
- Cancer Mutations
  7m
20. Quantitative Genetics1h 26m
21. Population Genetics50m
- Hardy Weinberg
  19m
- Allelic Frequency Changes
  31m
22. Evolutionary Genetics29m

17. Mutation, Repair, and Recombination

DNA Repair

Genetics

17. Mutation, Repair, and Recombination

DNA Repair

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Multiple Choice

The overall error rate in a completed DNA molecule is approximately __________.

1 error per 10^12 nucleotides

1 error per 10^3 nucleotides

1 error per 10^9 nucleotides

1 error per 10^6 nucleotides

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Verified step by step guidance

Understand that the error rate in DNA replication refers to how frequently mistakes occur when nucleotides are added during the synthesis of a new DNA strand.

Recall that DNA polymerase has proofreading ability, which significantly reduces the error rate compared to the initial incorporation of nucleotides.

Consider that the raw error rate of DNA polymerase without proofreading is about 1 error per 10^5 to 10^6 nucleotides, but proofreading and mismatch repair mechanisms further reduce this rate.

Recognize that after all correction mechanisms, the overall error rate in a completed DNA molecule is much lower, typically around 1 error per 10^9 nucleotides.

Therefore, the correct answer corresponds to the error rate after all proofreading and repair processes have occurred, which is approximately 1 error per 10^9 nucleotides.