Cell Division

Mitosis Cell Division

Meiosis Cell Division

Differences

aVISUALIZATION OF CELL DIVISION Materials Needed:• Chart paper• Thread (different colors)• Grains (such as rice, lentils, or beads)• Glue• Scissors• Markers or pensTheoryPhases of Cell Division:• Interphase• Prophase• Metaphase• Anaphase• Telophase• Cytokinesis• Steps to Construct Each Phase:1. Interphase Description: The cell is preparing for division. DNA is replicated, but chromosomes are not yet visible.

Construction:• Use a thicker thread (yarn) to make a large circle representing the cell.• Inside the circle, make a smaller circle to represent the nucleus.• Spread grains evenly within the nucleus to represent cell organnels and thinner thread chromatin (loosely packed DNA).2. Prophase Description: Chromosomes condense and become visible. The nuclear membrane starts to disintegrate.

Construction:• Use thread to create visible chromosomes by gluing it in a condensed X shape.• Place the thread chromosomes inside the nucleus.• Construct the disintegrating nuclear membrane with dashed thread..3. Metaphase Description: Chromosomes line up along the metaphase plate (center of the cell).

Construction:• Draw the cell and place a central line (metaphase plate) across the cell.• Align thread chromosomes along the central line.• Use two different colors of thread to represent spindle fibers attached to the centromeres of the chromosomes.4. AnaphaseDescription: Sister chromatids are pulled apart to opposite poles of the cell.

Construction:• Use the same cell outline.• Show the thread chromosomes being pulled apart towards opposite ends of the cell.• Use thread to create spindle fibers pulling the chromatids apart.5. TelophaseDescription: Chromosomes arrive at opposite poles, and the nuclear membrane starts to re-form.

Construction:• Draw the cell with two sets of chromosomes at opposite ends.• Use thread to create the chromosomes.• Draw new nuclear membranes forming around each set of chromosomes.• Indicate the beginning of the cell membrane pinching in (cleavage furrow).6. CytokinesisDescription: The cell divides into two daughter cells.

Construction:1. Show the final splitting of the cell into two.2. Use thread to show the separation of the cytoplasm.3. Draw the two new daughter cells, each with a nucleus and chromosomes.Final Touches:Label each phase clearly on the chart paper.Add descriptions or key points about what happens during each phase.Use different colors for different components (e.g., spindle fibers, chromosomes, nuclear membrane) to enhance visual clarity.