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

Mitosis

Genetics

9. Mitosis and Meiosis

Mitosis

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Multiple Choice

Which of the following best describes the chromosomal condition of a daughter nucleus at telophase of mitosis in a diploid cell with 2n = 6?

Each daughter nucleus contains 3 chromosomes, each consisting of two chromatids.

Each daughter nucleus contains 12 chromosomes, each consisting of a single chromatid.

Each daughter nucleus contains 6 chromosomes, each consisting of a single chromatid.

Each daughter nucleus contains 6 chromosomes, each consisting of two chromatids.

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Verified step by step guidance

Recall that the diploid number (2n) represents the total number of chromosomes in a somatic cell. Here, 2n = 6 means the cell has 6 chromosomes in total before mitosis begins.

Understand the stages of mitosis: during anaphase, sister chromatids separate and move to opposite poles, and by telophase, each daughter nucleus forms around these separated chromatids.

At telophase, each daughter nucleus should have the same chromosome number as the original diploid cell, but each chromosome now consists of a single chromatid because the sister chromatids have separated.

Therefore, the number of chromosomes in each daughter nucleus at telophase is equal to the diploid number (6), and each chromosome is a single chromatid.

Use this reasoning to evaluate the options and identify the one that correctly states the chromosome number and chromatid composition at telophase.