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S: Learning Mitosis

FC: Learning Mitosis By:Iyanna

1: Learning Mitosis By:Iyanna

2: The stages of interphase | Interphase is divided into 3 stages. The first stage is G1,During the process of G1 the cell begins to start growing. So it carries out normal function cells.Preparing it to replicate the DNA.The second stage which is S, is the period when cells copy its DNA in prep for cell division.THe last part of interphase is G2 which follows the s stage.This period is when the cell preps for the division of the nucleus.

4: Prophase | In prophase the cells chromatin tighents. Or may even condense into chromosomes. Also in prophase the chromosomes appear to be shaped like a X.The centromere which is the structure at the center of the chromosomes. Where the sister chromatids are attached.What makes this structure important is because it ensures a fully complete copy of the replicated DNA.The entire structure includes the spindle fibers,centrioles,and aster fibers.whcih is manily called the spindle apparatus. The spindle apparatus is extremly importsnt in moving and organizing the chromosomes. Before the cell division.

6: Metaphase | . | Chromosomes line up in the middle Spindle fibers attach to centromeres Pairs of homolougous chromosomes line up at the cells equator Chromosomes line up at the cells equator

7: Anaphase | Centromeres divide Chromatids moves to opposite poles Homologous chromosome seperate and move toward opposite ends of the cell. Sister chromatids are pulled apart by the spindle fibers and move toward opposite ends of the cell.

10: Telophase | Nuclear membrane reforms Chromosomes uncoil Spindle dissolves Homologous chromosome reach the cells poles and cytokinesis usually occurs. Chromosomes reach the cells poles,nuclear membrane and nuclei reform,and cytokinesis occurs;four cells form.

12: Cytokinesis | Cytoplasm divides in half Cell membrane encloses the two identical cells

14: Meiosis | Involves int he production of gametes Promotes genetic variation in organisms Involves two sets of nuclear divisions Produces daughter cells that are not identical Involves the synapsis of homologous chromosomes Results in four haploid gametes Also called reduction division

16: Mitosis vs. Meiosis | In meiosis the spindle form and the cytoplasm divides the same way it does in mitosis. However the chromosomes division is different.

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