![]() Now, once the mitotic spindle has been assembled, the centrosomes are also referred to as spindle poles. It’s duplicated during S phase, and the two copies move to opposite sides of the cell. The centrosome is an organelle that serves as a microtubule organizing center during division. spindle spin-dl Is responsible for mitotic spindle and microtubule formation? 2 : something (as an axle or shaft) which has a slender round shape and on which something turns. What do you mean by spindle?ġ : a slender round rod or stick with narrowed ends by which thread is twisted in spinning and on which it is wound. Formation of spindle apparatus occurs during prometaphase stage. Coiling of chromatin material into distinct chromosomes is the most important event of prophase. Spindle apparatus is formed during which stage of mitosis? Solution: The mitotic cell division is carried out in various stages. Read More: How do you carry out microbiological analysis? Is the spindle apparatus formed in mitosis? At the pointed ends, known as spindle poles, microtubules are nucleated by the centrosomes in most animal cells. In the wide middle portion, known as the spindle midzone, antiparallel microtubules are bundled by kinesins. The spindle apparatus is vaguely ellipsoid in cross section and tapers at the ends. The major components of the mitotic spindle include the spindle fibers (microtubules), microtubule-associated proteins, and the microtubule organizing center. They develop outside the nucleus during mitosis. Spindle fibers are made up of microtubules and they appear as spindle-shaped structures (thus, the name). What structures make up the mitotic spindle? During mitosis, the spindle fibers are called the mitotic spindle. Besides chromosomes, the spindle apparatus is composed of hundreds of proteins. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis. It is referred to as the mitotic spindle during mitosis, a process that produces genetically identical daughter cells, or the meiotic spindle during meiosis, a process that produces gametes with half the number of chromosomes of the parent cell. Spindle fibers form a protein structure that divides the genetic material in a cell. What is the structure and function of the mitotic spindle?
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