Mitosis Essay Example | Topics and Well Written Essays - 250 words

Mitosis - Essay characterAnimals for instance are known to undergo a form of mitosis called open mitosis. This is where the nuclear envelop disintegrates originally the chromosomes separate. Fungi on the other hand are known to undergo a closed mitosis where the chromosomes secernate within an unbroken cell nucleus (Golitsin and Krylov, 100-150).The process is divided into several stages and these are as a result of the different sequence of events that take place upon the completion of one activity to pave focusing for another. There are six stages in mitosis and these include inter physique, prophase, prometaphase, metaphase, anaphase and lastly the telophase. During the process the pairs of chromatids shorten and attach to fibers which wherefore pull the sister chromatids to the opposite ends of the cell. Cytokinesis then occurs to create two identical daughter cells (McAinsh, 100-330).Interphase here the cell prepares for cell division by manufacturing proteins and cytoplas mic organelles. This phase is divided into three stages, first gap (G1), synthesis(S) and spot gap (G2). The last second phase is where chromosomes replicate (McAinsh, 100-330)..Prophase the chromatin shortens into a chromosome. Since at the S phase the genetic material duplicated, the replicated chromosomes have two sister chromatids that are bound together at the center. At this stage the centrosomes (coordinating center for a cell microtubules) are pushed to the opposite sides of the cell (McAinsh, 100-330).Prometaphase the nuclei envelop disassembles and microtubules come in the nuclei space. Each chromosome then forms two kinetochores at the centromere and to each one one is attached at each chromatid (Snedden, 1-48).Metaphase the two centrosomes begin pulling the chromosomes along their attached centromeres towards the end of the cells. The chromosomes become tensed from the longitudinal pull. The centromeres of the chromosomes conform along the metaphase