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

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Multiple Choice

Which protein stabilizes the DNA molecule during replication?

Topoisomerase

Single-strand binding protein (SSB)

DNA ligase

DNA glycosylase

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Verified step by step guidance

Understand the role of each protein listed in the problem during DNA replication.

Recall that Topoisomerase helps relieve the tension ahead of the replication fork by cutting and rejoining DNA strands, preventing supercoiling.

Recognize that DNA ligase is responsible for joining Okazaki fragments on the lagging strand by forming phosphodiester bonds.

Know that DNA glycosylase is involved in base excision repair, not replication, by removing damaged bases.

Identify that Single-strand binding proteins (SSB) bind to single-stranded DNA after the strands are separated, preventing the strands from reannealing or forming secondary structures, thus stabilizing the DNA during replication.