Microtubules of the spindle fibers originate during mitosis in animal cells from the centrioles of the cell.
The centrioles of the cell are where the microtubules for the spindle in animal cells begin. Tubulin proteins, which give centrioles their cylindrical shape, are the building blocks for these tiny organelles. These proteins aid in the production of brand-new microtubules that will assist in dividing the cell's genetic material.
When it comes to the mitotic phases, centrioles are crucial. During prophase, they initially go to the cell's opposing poles. Once finished, the centrioles will develop into microtubules that will connect to the sister chromatid centromeres and arrange them on the cell equator during metaphase. After that, during anaphase, the centrioles separate the chromatids, bringing each copy to the opposing edges of the dividing cell.
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