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

What would most likely happen if a cell skipped metaphase during mitosis?

The nuclear envelope would fail to break down, preventing chromosome separation.

Sister chromatids would separate normally, but spindle fibers would not form.

Chromosomes would not align at the cell's equator, leading to unequal chromosome distribution in daughter cells.

Cytokinesis would occur before chromosome replication, resulting in cells with double the normal chromosome number.

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Verified step by step guidance

Understand the role of metaphase in mitosis: during metaphase, chromosomes align at the cell's equator (the metaphase plate), ensuring that each daughter cell will receive an equal set of chromosomes.

Recognize that if metaphase is skipped, chromosomes will not properly align at the metaphase plate, disrupting the orderly separation process.

Recall that the spindle fibers attach to the centromeres of sister chromatids and help pull them apart during anaphase; without proper alignment, spindle fibers cannot evenly distribute chromosomes.

Consider the consequence of misaligned chromosomes: unequal distribution of chromosomes to daughter cells, which can lead to genetic imbalances.

Conclude that skipping metaphase leads to improper chromosome alignment and segregation, resulting in daughter cells with unequal chromosome numbers.