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