Breakdown of Mitosis. https://www.youtube.com/watch?v=gwcwSZIfKl M.

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Presentation transcript:

Breakdown of Mitosis

M

Chromosomes Chromosomes- a long continuous thread of DNA that consists of numerous genes along with regulatory information Your body cells have 46 chromosomes each =diploid cells You sex cells (eggs/sperm) have 23 cells each = haploid

Interphase The cell copies its DNA and grows in preparation for division The DNA is loosely organized during interphase Stages of Interphase G1 (Gap 1) Stage - Growth and synthesis of new organelle S Stage - Synthesis of DNA G2 Stage - preparation for cell division

Prophase Chromatin condenses to form chromosomes Nuclear membrane breaks down Centrioles divide and migrate to the poles Spindles form Spindle Fibers

Metaphase Chromosomes line up along the equator

Anaphase Chromatids separate and migrate to the poles

Telophase Nuclear membranes reform at each pole around the chromatid Spindle disappears Cytokinesis begins.

Cytokinesis Divides the cytoplasm between two daughter cells, each with a genetically identical nucleus The cells enter interphase and begin the cycle again