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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

At the end of anaphase I of meiosis I, which of the following best describes the state of homologous chromosomes?

Homologous chromosomes are still paired at the metaphase plate.

Homologous chromosomes have separated and are moving toward opposite poles.

Sister chromatids have separated and are moving toward opposite poles.

Each chromosome consists of a single chromatid.

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Verified step by step guidance

Recall the key events of meiosis I, especially focusing on anaphase I, where homologous chromosomes are separated.

Understand that during metaphase I, homologous chromosomes (each consisting of two sister chromatids) align at the metaphase plate as pairs.

During anaphase I, the homologous chromosomes are pulled apart toward opposite poles, but sister chromatids remain attached.

Recognize that sister chromatids do not separate until anaphase II of meiosis II, so at the end of anaphase I, each chromosome still consists of two chromatids.

Conclude that the correct description is that homologous chromosomes have separated and are moving toward opposite poles, while sister chromatids remain together.