10-2 Cell Division
Chromosomes Chromosomes – Made up of DNA (carries genetic material) Must be copied before cells can divide Before cell division chromosomes become visible. Consists of two identical sister chromatids (copied chromosomes) chromosome 3. Sister chromatids
Mitosis – Dividing of Cell Nucleus Mitosis Cell Division – division of cell Prophase 1. Interphase Metaphase 2. Prophase Anaphase 3. Metaphase Telophase 4. Anaphase 5. Telophase 6. Cytokinesis Key terms: Centrioles - structures that make spindle fibers Spindle fibers – structure responsible for separating chromatids
Interphase Chromosomes not visible
Prophase Spindle fibers Prophase (key events) Chromosomes become visible Nucleus begins to disappear Spindle fibers are formed from centrioles centrioles
Metaphase Metaphase The chromosomes line up across the center of the cell (moving along spindle fibers)
Anaphase Anaphase Chromosomes pulled apart (sister chromatids) until they form two groups near the “poles” of the spindle
Telophase Telophase The nucleus begins to reform around each cluster of chromosomes Cytokinesis – Division of cytoplasm. Cell membrane or Cell plate is formed in between nuclei
Mitosis and Cytokinesis Spindle forming Centrioles Chromatin Centromere Nuclear envelope Centriole Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Telophase Individual chromosomes Anaphase Nuclear envelope reforming Go to Section:
Mitosis and Cytokinesis Spindle forming Centrioles Chromatin Centromere Nuclear envelope Centriole Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Telophase Individual chromosomes Anaphase Nuclear envelope reforming Go to Section:
Mitosis and Cytokinesis Spindle forming Centrioles Chromatin Centromere Nuclear envelope Centriole Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Telophase Individual chromosomes Anaphase Nuclear envelope reforming Go to Section:
Mitosis and Cytokinesis Spindle forming Centrioles Chromatin Centromere Nuclear envelope Centriole Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Telophase Individual chromosomes Anaphase Nuclear envelope reforming Go to Section:
Mitosis and Cytokinesis Spindle forming Centrioles Chromatin Centromere Nuclear envelope Centriole Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Telophase Individual chromosomes Anaphase Nuclear envelope reforming Go to Section:
Mitosis and Cytokinesis Spindle forming Centrioles Chromatin Centromere Nuclear envelope Centriole Chromosomes (paired chromatids) Interphase Prophase Spindle Cytokinesis Centriole Metaphase Telophase Individual chromosomes Anaphase Nuclear envelope reforming Go to Section:
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