Presentation on theme: "Mitosis and Cytokinesis"— Presentation transcript:
1 Mitosis and Cytokinesis Cell DivisionMitosis and Cytokinesis
2 Cell Reproduction Interphase Mitosis (Division) Cytokinesis (Division) Cell growth, DNA synthesis, Growth and PreparationMitosis (Division)dividing the nucleus into two daughter nucleiCytokinesis (Division)separating the organelles and the cytoplasm
4 MitosisMitosis is a continuous process that can be observed in four stages:ProphaseMetaphaseAnaphaseTelophase
5 Prophase 1 Chromosomes begin to condense The nuclear membrane breaks down.Spindle which is made up of several spindle fibers form.run at a right angle to the cell’s equator.An organelle called the centrosome helps assemble the spindle.animal cells includes a pair of centriolescentrosomes move to opposite poles of the cell
7 Metaphase Chromosomes are packaged into their most condensed form. Nuclear membrane is fully dissolvedChromosomes move to the center of the cellSpindle fibers form a link between the poles and the centromere of each chromosome.
13 Cytokinesis The cytoplasm is separated Two daughter cells are formed Have half of the parent’s cytoplasm and organellesGenetically identical diploid cellsAfter cytokinesis, each cell enters the G1 stage of interphase.
15 Summary The life of a eukaryotic cell cycles through; Growth, DNA replicationpreparation for cell divisiondivision of the nucleus and cytoplasmMitosis is a continuous process that includes four stages:ProphaseMetaphaseAnaphaseTelophaseCytokinesisthe cell membrane grows into the center of the cell and divides it into two daughter cellseach daughter cell has about half of the parent’s cytoplasm and organelles