Table of contents

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

Previous problemNext problem

Struggling with Genetics?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which DNA repair process specifically corrects damage to a preexisting double helix, such as mismatched bases or distortions in the DNA structure?

Nucleotide excision repair

DNA replication

Translation

Transcription

Previous problemNext problem

Verified step by step guidance

Understand that the question asks about a DNA repair process that fixes damage in an already existing double helix, such as mismatched bases or structural distortions.

Recall that DNA replication is the process of copying DNA before cell division, not a repair mechanism.

Recognize that translation and transcription are processes related to protein synthesis and RNA production, respectively, and do not directly repair DNA.

Identify that nucleotide excision repair (NER) is a specific repair mechanism that removes bulky DNA lesions or distortions by excising a short single-stranded DNA segment containing the damage and then filling in the gap using DNA polymerase and ligase.

Conclude that nucleotide excision repair is the correct process for correcting damage to a preexisting double helix, such as mismatched bases or distortions.