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Mitosis
Mitosis
7
Biology
9th Grade
10/04/2016

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Term
The phases
Definition
Prophase, Prometaphase, Metaphase, Anaphase, Telophase, Cytokinesis
Term
Prophase
Definition
>Chromosomes condence and become visible
>Spindle fibers emerge from the centromeres
>Nuclear envelope breaks down
>Nucleolus disappears
Term
Prometaphase
Definition
>Chromosomes continue to condense
>Kinetochores appears at the centromeres
>Mitotic spindle microtubules attach to kinetechores
>Centrosomes move toward opposite poles
Term
Metaphase
Definition
>Mitotic spindle is fully developed, centrosomes are lined up at opposite poles of the cell
>Chromosomes are lined up at the metaphase plate
>Each sister chromatid is attached to a spindle fiber originating from opposite poles
Term
Anaphase
Definition
>Conesin proteins binding the sister chromatids together breaks down
>Sister chromatids (now called chromosomes) are pulled toward opposite poles
>Non-kinetochore spindle fibers lengthen, elongating the cell
Term
Telophase
Definition
>Chromosomes arrive at opposite poles and begin to decondense
>Nuclear envelope material surrounds each set of chromosomes
>The mitotic spindle breaks down
Term
Cytokinesis
Definition
>Animal cells: A cleavage furrow separates the daughter cells
>Animal cells: A cell plate separates the daughter cells
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