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

9. Mitosis and Meiosis

Mitosis

Genetics

9. Mitosis and Meiosis

Mitosis

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Multiple Choice

Which checkpoint is responsible for ensuring the DNA was replicated properly?

G1/S

G2/M

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Verified step by step guidance

Understand the cell cycle phases: The cell cycle consists of several phases, including G1, S, G2, and M. Each phase has specific functions related to cell growth and division.

Identify the role of checkpoints: Checkpoints are control mechanisms in the cell cycle that ensure the cell is ready to proceed to the next phase. They help prevent errors such as DNA damage or incomplete replication.

Focus on the G2/M checkpoint: This checkpoint occurs between the G2 phase and the M phase. It is responsible for verifying that DNA replication has been completed correctly and that the cell is ready to enter mitosis.

Compare with other checkpoints: The G1/S checkpoint ensures the cell is ready to begin DNA replication, while the M checkpoint ensures proper chromosome alignment before cell division. The G2/M checkpoint specifically checks for DNA replication errors.

Conclude the importance of the G2/M checkpoint: It plays a crucial role in maintaining genomic integrity by preventing cells with damaged or incomplete DNA from entering mitosis, thus ensuring proper cell division.