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

6. Chromosomal Variation

Chromosomal Mutations: Aberrant Euploidy

Genetics

6. Chromosomal Variation

Chromosomal Mutations: Aberrant Euploidy

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Multiple Choice

Which structure is responsible for holding sister chromatids together during cell division?

Centrosome

Cohesin complex

Kinetochore

Spindle fiber

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Verified step by step guidance

Understand the role of sister chromatids during cell division: Sister chromatids are identical copies of a chromosome that are connected and must be held together until they are separated into daughter cells.

Identify the structures listed in the problem and their functions: Centrosome organizes microtubules, kinetochore is the protein structure where spindle fibers attach, spindle fibers are microtubules that pull chromatids apart.

Recall that the structure responsible for physically holding sister chromatids together is a protein complex that acts like a glue between them.

Recognize that this protein complex is called the cohesin complex, which ensures sister chromatids remain attached until anaphase of mitosis or meiosis.

Conclude that among the options given, the cohesin complex is the correct structure responsible for holding sister chromatids together during cell division.