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 phase of mitosis involves the duplication of chromosomes?

Metaphase

Prophase

Telophase

S phase of interphase

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Verified step by step guidance

Understand that mitosis is the process of cell division where one cell divides into two genetically identical daughter cells, and it consists of several phases: prophase, metaphase, anaphase, and telophase.

Recall that chromosome duplication does not occur during mitosis itself but happens earlier in the cell cycle, specifically during the S phase of interphase, where DNA replication takes place.

Recognize that during the S phase, each chromosome is duplicated to form two sister chromatids, which remain attached until they are separated during mitosis.

Note that prophase is the first phase of mitosis where the chromosomes condense and become visible, but the duplication has already occurred by this point.

Therefore, the duplication of chromosomes is a process of the S phase in interphase, not any phase of mitosis such as metaphase, prophase, or telophase.