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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

Which stage of meiosis is characterized by the pairing of homologous chromosomes and crossing over?

Telophase II

Anaphase I

Prophase I

Metaphase II

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Verified step by step guidance

Recall the main stages of meiosis: Prophase I, Metaphase I, Anaphase I, Telophase I, followed by Prophase II, Metaphase II, Anaphase II, and Telophase II.

Understand that homologous chromosomes pair up during meiosis to allow for genetic recombination, which is the exchange of genetic material between homologous chromosomes.

Identify that the pairing of homologous chromosomes, also called synapsis, occurs specifically during Prophase I of meiosis.

Recognize that crossing over, the physical exchange of chromosome segments between homologous chromosomes, also takes place during Prophase I.

Conclude that since both pairing of homologous chromosomes and crossing over happen during Prophase I, this is the stage characterized by these events.