Life Process - 1 [ Cell Division : Mitosis ]

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🌱 What is Mitosis?

Mitosis is the process by which a single cell divides to form two identical daughter cells. This is how your body grows, repairs wounds, and replaces old cells.

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🔄 Steps of Mitosis (in Simple Words):

1. DNA Doubling

   • The cell first copies its DNA:
     2n → 4n (Double chromosomes)

2. Prophase

   • Chromosomes become visible.
   • Nuclear membrane breaks down.
   • Spindle fibers start forming.

3. Metaphase

   • Chromosomes line up in the center.
   • Spindle fibers attach to them.

4. Anaphase

   • Each chromosome splits.
   • The two halves (sister chromatids) move to opposite ends.

5. Telophase

   • New nuclear membranes form.
   • Chromosomes become thin and invisible again.

6. Cytokinesis (Cell Splitting)

   • In animal cells, a notch forms in the middle and pinches off.
   • In plant cells, a cell plate forms in the center.

7. Result:

   • 2 identical cells, each with same number of chromosomes as the original.

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