Mitosis Notes
Biology
Interphase
• DNA is (# of chromosomes doubles)
• DNA...
Mitosis Notes
Biology
Interphase
• DNA is (# of chromosomes doubles)
• DNA appears as (chromatin) at the start, but change to at the end of this phase.
Prophase
• (cell begins to divide)
• appear and begin to move to of cell (only in animal cells)
• form between the poles (made of microtubules)
• starts to disappear
Metaphase
• attach to the spindle fibers at the of the cell.
Anaphase
• when the and begin to move to opposite ends of the cell (spindle fiber ).
Telophase
•
• Chromosomes appear as
• Spindle fibers and disappear
Cytokinesis
• Cell membrane moves inward to create - each with its own nucleus with
Control of the Cell Cycle
• Controlled by enzymes called and
1. (G1): decide whether the cell will divide
2. (G2): checks DNA replication
3. (M): triggers exit from mitosis
Cancer
• division of cells
• Cancer cells to the body’s control mechanisms.
Apoptosis
• Programmed
• Cells that are no longer
• fingers and toes
• cells
• leaves
Stem Cells
• cells that can be programmed to develop into cells
• - 100-150 stem cells
• Adult stem cells – also called stem cells
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