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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

Which of the following is NOT involved in the unwinding of DNA during replication?

Topoisomerase

Single-strand binding proteins

Helicase

DNA ligase

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Verified step by step guidance

Step 1: Understand the role of each protein listed in the context of DNA replication, specifically focusing on the unwinding process.

Step 2: Recall that Helicase is the enzyme responsible for breaking hydrogen bonds between DNA strands, effectively unwinding the double helix.

Step 3: Recognize that Single-strand binding proteins stabilize the separated DNA strands to prevent them from re-annealing during replication.

Step 4: Know that Topoisomerase relieves the torsional strain ahead of the replication fork by cutting and rejoining DNA strands, facilitating unwinding.

Step 5: Identify that DNA ligase is involved later in replication, specifically in joining Okazaki fragments on the lagging strand, and does not participate in the unwinding process.