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Cell Cycle :smiley: - Coggle Diagram
Cell Cycle :smiley:
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Mitosis
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One cell (the mother cell) divides to produce to new cells (the daughter cells) that are genetically identical to itself.
During development and growth, mitosis populates your body with cells, and throughout an organism's life, it replaces old cells with new ones.
Interphase
G1
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Cellular content, except for the chromosomes, are duplicated
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PMAT
Prophase:
- Chromosomes become visible in the nucleus.
- Centrioles move to opposite ends of the cell
Metaphase:
- Chromosomes line up in the middle of the cell and attach to the spindle fibers
Anaphase:
- Spindle fibers pull chromosomes pairs apart toward each end of the cell
Telophase:
- Spindle disappears
- Nuclear membrane re-forms
- Nucleolus reappears
- Chromosomes start to decondense
Cytokinesis
- The division of the cytoplasm to form to new cells
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Meiosis I
First, it goes through interphase
Prophase I:
- starting cell is diploid (2n)
- chromosomes begin to condense and they also pair up
- Crossing over happens (a process where homologous chromosomes trade parts)
Metaphase I:
- homologue pairs line up in the middle of the cell
Anaphase I:
- Homologous pairs separate to opposite ends of the cell
- Sister chromatids stay together
Telophase I:
- New cells are haploid (n)
- Each chromosome has two, non-identical sister chromatids
Meiosis II
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Prophase II:
- Starting cells are the haploid cells made in meiosis I
- Chromosomes condense
Metaphase II:
- Chromosomes line up in the middle of the cell
Anaphase II:
- Sister chromatids separate to opposite ends of the cell
Telophase II:
- Newly form gametes are haploid
- Each chromosome has just one chromatid
- Nuclear membrane re-form
- Cytokinesis happens