mitosis Essay

Mitosis is definitely the process where a cell destroys apart its chromosome to eventually create two identical daughter cells. The cellular spends 10% of its time in mitosis. The cell goes through four stages to be able to complete this task. The periods are Prophase, Metaphase, Anaphase and Telophase. Mitosis only occurs in eukaryotic cellular material and the method is different for different species. Mitosis is fast and very intricate.

The 1st phase is definitely Prophase. In prophase, the chromosomes the chromosomes learn to coil, cut short, and become distinctive. The nucleoli disappear every replicated chromosomes appear while the identical sister chromatids join together. The spindle fabric begin to form and it`s made of the centrosomes plus the microtubules that extend from their store. The centrosomes move faraway from each other, powered by the microtubules between them. The chromosomes happen to be held jointly by centromeres. Centrosomes are very important in mitosis; the centrosomes will probably be pushed aside to opposing ends from the cell nucleus by the action of molecular motors acting on the microtubules. Basically, the chromatin inside the nucleus shelves into chromosomes. The nucleolus disintegrates as well as the centrosomes proceed to opposite poles of the cellular, forming a bridge of spindle fibers. When prophase is complete, the cellular moves to metaphase. Second is Metaphase; Metaphase is usually longest stage of mitosis, lasting regarding 20 minutes. The centrosomes are now by opposite ends of the cell. The chromosomes convene within the metaphase dish, an imaginary plane that is certainly equidistant between the spindle`s the poles. The chromosomes centromeres lie within the metaphase plane. Each chromosome, the kinetochores of the sibling chromatids will be attached to kinetochore microtubules from the opposite poles. A cell cannot get into anaphase unless all the chromosomes have aligned themselves. The line in which the chromosome line up is referred to as the spindle equator. The moment metaphase is done, the cellular moves to anaphase. The third stage is...

References: /images/no_image.jpg


Campbell, Neil A., Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, and Robert B. Knutson. AP Edition Biology. Ny: Benjamin/Cummings, 08. Print.

" Mitosis --. " Wikipedia, the Totally free Encyclopedia. In. p., and. d. Net. 21 Sept. 2013..