WWhat are cells? HHow are cells produced? WWhat happens during Mitosis? By: Sade Hales MMitosis PPHASES PProphase MMetaphase AAnaphase TTelophase CCytokinesis Divided into four phases The process can last as long as a few minutes up to several days PROPHASE First and longest phase 50 to 60 percent Visible chromosomes Centriole separate and spindle form Nuclear membrane breaks down METAPHASE Second phase Last for a few minutes Chromosomes line up across the center Centromere of each chromosome are connected to the spindle poles ANAPHASE Centromeres that join the sister chromatids separate Individual chromosomes Chromosomes continues to move Ends when chromosomes stop moving TELOPHASE Final phase Re-form nuclear envelope Spindle begins to break apart Nucleolus becomes visible A new daughter cell is born Cell division is not completed but mitosis is Division of the cytoplasm Contains its own nucleus and cytoplamic organelles Completes the M phase Mitosis is cell division Prophase is the first and longest phase Metaphase is when the chromosomes line up across the center of the cell Anaphase is when the chromosomes separate Telophase is two nuclei is formed (daughter cells) Cytokinesis divides the cytoplasm Making physical representation of Mitosis Calculating the exponential growth of a hypothetical dividing cell Observe the growth of yeast cells For information click on MITOSISMITOSIS