======Sock Mitosis====== **Materials: **{{$demo.materials_description}}\\ **Difficulty: **{{$demo.difficulty_description}}\\ **Safety: **{{$demo.safety_description}}\\ \\ **Categories:** {{$demo.categories}} \\ **Alternative titles:** Sock Chromosomes ====Summary==== {{$demo.summary}} ====Procedure==== - Draw a large circle on a sheet of paper to represent the cell. - Gather four pairs of socks (each pair should look different to represent different chromosomes). - **Interphase:** Place four single socks inside the circle in a jumble to represent unduplicated chromosomes. - **Replication:** Add the matching socks to each original sock so each pair is now two identical socks, showing chromosome duplication. (You can place them side by side to show sister chromatids.) - **Prophase:** Rearrange the duplicated sock pairs into an “X” shape to show condensed chromosomes. - **Metaphase:** Line up all duplicated sock pairs across the center of the circle. - **Anaphase:** Separate the matching socks and move one from each pair to opposite sides of the circle. - **Telophase:** Group the socks into two bundles on opposite sides of the circle to represent the reformation of nuclei. - **Cytokinesis:** Draw a line across the circle to divide it into two smaller circles, each containing one complete set of socks (chromosomes). ====Links==== Mitosis- Dr. Steve Griffith: {{youtube>JhZe-7vifBc?}}\\ ====Variations==== * Use different colored or patterned socks to make chromosomes more distinct. * Have students act out mitosis using socks on the classroom floor instead of paper. * Extend the demonstration by showing meiosis with the same sock method. ====Safety Precautions==== * No hazards—safe classroom activity. * Keep socks clean and organized for reuse. ====Questions to Consider==== * Why is it important that each new “cell” ends up with the same number of socks as the original? (Because mitosis produces identical daughter cells.) * How does this model show that chromosomes duplicate before division? (Each sock gains a partner, representing replication.) * What part of the cycle ensures genetic consistency from one cell to the next? (The even separation of chromatids during anaphase.)