Problem: Describe the structure and explain the function of the spindle fibres. What is the significance of cytokinesis? Speculate what would happen if cytokinesis did not occur.

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Spindle fibers are collections of cylindrical microtubules called centrioles that move chromosomes during cell division. Microtubules are protein filaments that resemble hollow rods. Spindle fibers are a part of the spindle apparatus, which moves chromosomes during mitosis and meiosis to ensure each daughter cell gets the correct number of chromosomes.


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Describe the structure and explain the function of the spindle fibres. What is the significance of cytokinesis? Speculate what would happen if cytokinesis did not occur.