mitosis

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MITOSIS

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MITOSIS

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  • 1. MITOSIS

2. MITOSISMitosis is a type of cell divisionthat results in two daughter cellseach having the same number andkind of chromosomes as the parentnucleus, typical of ordinary tissuegrowth. 3. PROPHASEChromosomal material condense to formcompact mitotic chromosomes.Initiation of the assembly of mitotic spindle,and the microtubule, 4. METAPHASESpindle fiber's attach to kinetochores ofchromosomes.Chromosomes are moved to spindle equatorand get aligned along metaphase platethrough spindle fibres to both poles. 5. ANAPHASECentromeres split and chromatids separate.Chromatids move opposite poles. 6. TELOPHASE Chromosomes cluster at opposite spindle polesand their identity is lost as discrete elements. Nuclear envelope assembles around thechromosome cluster. Nucleolus, Golgi complex are reform. 7. CYTOKINESISMitosis accomplish not onlythe segregation of duplicatedchromosomes into daughter nuclei(kariokinesis), but the cell itself isdivided into daughter cells by theseparation of cytoplasm, the process iscalled cytokinesis at the end of whichcell division is complete. 8. CYTOKINESIS IN ANIMAL CELL In animal cell cytokinesis isdone the appearance of afurrow in he plasmamembrane. The furrowgradually disappear andultimately joins in the centerdividing the cell cytoplasm intotwo. 9. CYTOKINESIS INPLANT TISSUE Plant cell build a cell membraneand cell wall at the center of thedividing cell. This structure is calledcell plate. Which grows outward tothe existing lateral cell wall. 10. SIGNIFICANCE OF MITOSIS1. Mitosis involves division of a parent cell into twodaughter cells with identical genetic material.2. Growth of multicellular organisms are due tomitosis.3. Mitosis provides healthy cells for replacement ofcells that have become worm out or damaged.4. Mitosis maintain the chromosome number of allcells in the body constant.5. It is the basis of asexual reproduction in lowerorganisms like Amoeba.