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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

9. Mitosis and Meiosis

Meiosis

Genetics

9. Mitosis and Meiosis

Meiosis

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Multiple Choice

After the homologous pairs are separated during meiosis I, which of the following events occurs next?

DNA replication occurs again before meiosis II.

The cell immediately enters mitosis.

Homologous chromosomes pair up again for crossing over.

Sister chromatids are separated during meiosis II.

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Verified step by step guidance

Recall the sequence of events in meiosis: Meiosis I involves the separation of homologous chromosome pairs, while meiosis II involves the separation of sister chromatids.

Understand that DNA replication occurs only once before meiosis begins, during the S phase of interphase, and does not happen again between meiosis I and meiosis II.

Recognize that after meiosis I, the cell does not enter mitosis; instead, it proceeds directly into meiosis II without an intervening round of DNA replication.

Note that homologous chromosomes pair up and crossing over occurs during prophase I of meiosis I, not after meiosis I is completed.

Therefore, the next key event after homologous chromosomes separate in meiosis I is the separation of sister chromatids during meiosis II.