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How Cells Reproduce

How Cells Reproduce. Chapter 6. Mitosis, Meiosis, and the Prokaryotes. Eukaryotic cells Mitosis copies DNA and divides a nucleus, producing two identical nuclei Meiosis is a nuclear division that produces haploid gametes for sexual reproduction. A Chromosome and Sister Chromatids.

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How Cells Reproduce

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  1. How Cells Reproduce Chapter 6

  2. Mitosis, Meiosis, and the Prokaryotes • Eukaryotic cells • Mitosis copies DNA and divides a nucleus, producing two identical nuclei • Meiosis is a nuclear division that produces haploid gametes for sexual reproduction

  3. A Chromosome and Sister Chromatids centromere

  4. Cytoplasmic Division Mechanisms • Cytokinesis

  5. Mitosis and the Chromosome Number • Mitosis produces 2 diploid nuclei with the same # of chromosomes as the parent cell • Chromosome number- # chromosomes in a cell • Human cells _______________ • sex chromosomes XY

  6. Fig. 9-5a, p. 145

  7. The Importance of Timing and Completion of Cell Cycle Events

  8. Cancer

  9. Characteristics of Cancer Cells • Cancers • Cells grow and divide abnormally • Cells may break away and invade distant tissues (metastasis) benign tumor malignant tumor

  10. Skin Cancers

  11. Impacts, IssuesHenrietta’s Immortal Cells • Henrietta Lacks died of cancer at age 31, but her cells (HeLa cells) are still growing in laboratories

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