MITOSIS

Review Which cells use Mitosis? How many cells does Mitosis create? All but the sex cells, muscle and nerve cells For example: skin, cheek, plant & cells How many cells does Mitosis create? 2 daughter cells Are the cells diploid or haploid? Diploid because have two pairs of chromosomes

Stages of Mitosis

Mitosis

Interphase Takes up the majority of the cell Cycle time During Interphase most of the cells life activities are taking place: Growth Metabolism (Breakdown of food) Chromosomes are duplicated Growth and final preparations for division

Mitosis The last part of the cell cycle is called Mitosis Mitosis includes the last 4 phases of the cell Cycle Prophase Metaphase Anaphase Telophase

Prophase Longest phase of mitosis The nucleus begins to disappear Chromatin coils up to form Sister Chromotids The sister chromatids are identical to the parent cells DNA The halves are connected by a Centromere

Prophase Cont 2 Centrioles appear and migrate to the edges of the cell Spindle fibers begin to form between the Centrioles and help pull apart the sister chromatids

Metaphase The 2nd and shortest phase of mitosis The Chromosomes attach to the spindle fibers by the centromeres The chromosomes line up in the middle of the cell

Anaphase The 3rd phase of Mitosis The sister chromotids begin to break apart at the centromeres Chromatids move towards the centrioles

Telophase The 4th phase of mitosis The chromatids reach the edges of the cell Two new nuclei reform around separated chromatids The cell begins to uncoil the chromosomes The uncoiled chromosomes then begin telling the cell what to do- This is the end of Mitosis The plasma membrane begins to separate into 2 cells (This is the beginning of Cytokinesis)

Mitosis Video Mitosis Video

Mitosis Video http://www.youtube.com/watch?v=VlN7K1-9QB0