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

Meiosis

Genetics

9. Mitosis and Meiosis

Meiosis

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Multiple Choice

During meiosis, at which phase is it preferable to obtain chromosomes to prepare a karyotype?

Metaphase I

Prophase I

Anaphase II

Telophase I

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Verified step by step guidance

Understand that a karyotype is a visual profile of all the chromosomes in a cell, arranged and paired by size, shape, and number.

Recall that chromosomes are most condensed and visible under a microscope during certain phases of meiosis, which is crucial for preparing a clear karyotype.

Identify the phases of meiosis where chromosomes are highly condensed and aligned, making them easier to observe: Prophase I, Metaphase I, Anaphase II, and Telophase I.

Recognize that during Metaphase I, homologous chromosomes are aligned at the metaphase plate and are highly condensed, which provides the best opportunity to observe and photograph chromosomes for karyotyping.

Conclude that Metaphase I is the preferable phase to obtain chromosomes for preparing a karyotype because the chromosomes are most visible and organized at this stage.