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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 of the following statements about chromosome number during meiosis is correct?

The chromosome number is tripled during meiosis.

The chromosome number is halved during meiosis.

The chromosome number is doubled during meiosis.

The chromosome number remains unchanged during meiosis.

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Verified step by step guidance

Understand the purpose of meiosis: Meiosis is a type of cell division that reduces the chromosome number by half to produce gametes (sperm and egg cells) in sexually reproducing organisms.

Recall the chromosome number in a diploid cell: A diploid cell contains two sets of chromosomes (2n), one set inherited from each parent.

Identify what happens during meiosis: Meiosis consists of two rounds of division (meiosis I and meiosis II) but only one round of DNA replication, resulting in four haploid (n) daughter cells.

Analyze the chromosome number change: Since meiosis reduces the chromosome number from diploid (2n) to haploid (n), the chromosome number is halved during meiosis.

Conclude which statement is correct: The correct statement is that the chromosome number is halved during meiosis, not tripled, doubled, or unchanged.