Today we delved deeper into a cell's life cycle by breaking down the steps of Mitosis - 4 stages where the nucleus divides and genetic material is split in the process of creating 2 daughter cells.
Assignment 50 - Cell Division Mnemonic
Assignment 51 - Mitosis Notes
Before Mitosis, during Interphase - DNA starts to tightly coil up into things called cromatids, which are attached with a centromere in the center, creating a chromosome. Humans have 23 pairs of homologous chromosomes.
Mitosis begins with a step called Prophase - during this time the nuclear envelop disappears and the doubled up chromosomes float around in the cytoplasm. Centrioles move to opposite poles of the cell.
Next, is Metaphase - where the chromosomes move to the center of the cell and the centioles send out spindle fibers that attach to the centromeres.
Then, the chromosomes are split in half in Anaphase.
Finally, Mitosis finishes with Telophase - where new nuclear envelopes form around the separated chromosomes.
After Mitosis, the cell finishes diving with Cytokenisis- where the cytoplasm splits down the middle and 2 new daughter cells are formed.
Students recreated this process using yarn and string. The table represented the entire cell. The blue yarn was the nuclear membrane, and the small strands of twine were the chromosomes. Students went through all the steps of cell division as a kinesthetic learning activity.
Finally students created mnemonic devices to help remember the sequence of the steps of Cell division using the letters I, P, M A, T, C to create sentences to aid memory.
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