Table of contents

Skip topic navigation

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

Previous problemNext problem

Struggling with Genetics?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

During which stage of meiosis do homologous chromosomes synapse and crossing over occurs?

Prophase I

Telophase I

Metaphase I

Anaphase II

Previous problemNext problem

Verified step by step guidance

Recall the stages of meiosis and their key events, focusing on Prophase I, Metaphase I, Anaphase I, Telophase I, and the stages of Meiosis II.

Understand that synapsis is the pairing of homologous chromosomes, which is a unique event that occurs only during Prophase I of meiosis.

Recognize that crossing over, the exchange of genetic material between homologous chromosomes, also takes place during Prophase I, specifically in the pachytene substage.

Note that Metaphase I involves the alignment of homologous chromosome pairs at the metaphase plate, but synapsis and crossing over have already occurred by this point.

Conclude that since synapsis and crossing over happen together, the correct stage is Prophase I.