Mitosis & Meiosis Board Notes

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Mitosis & Meiosis Board Notes

Mitosis: Cell replication & Division Interphase: DNA replication occurs and other regular cell processes Mitosis begins!! 1. Prophase: Chromosomes condense. Microtubules attach. 2. Metaphase: Chromosomes line up in the MIDDLE of the cell. 3. Anaphase: Sister Chromatids (Chromosomes) are pulled APART 4. Telophase: New nucleus & other cell parts appear. Cell membrane starts to divide. Mitosis Ends!! Cytokinesis: New cell membranes form. Mitosis happens in Diploid cells. At the end of mitosis, we have 2 identical diploid cells. (They look the same as the original cell) Diploid: Chromosomes have pairs Haploid: Chromosomes don't have pairs (Reproductive cells)

Meiosis: The production of REPRODUCTIVE CELLS! Interphase: DNA replicates & other processes Meiosis Begins!! 1. Prophase 1 (CROSSING OVER: Switching some DNA around between chromosomes) 2. Metaphase 1 3. Anaphase 1 4. Telophase 1 5. Prophase 2 6. Metaphase 2 7. Anaphase 2 8. Telophase 2 (Nuclear membranes form around the DNA) At the end of MEIOSIS we have 4 GENETICALLY DIFFERENT HAPLOID CELLS (These are called GAMETES) ZYGOTE: Two gametes fused together to make a new organism (Sperm+Egg, Pollen+Seed)

List at least three differences and similarities