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Transcript
Cell Division Discover Biology, 5th Ed. WW Norton & Co., © 2012 Chapter 10, pp 228-279. Types of Cell Division • Prokaryotes (Bacteria & Archaeans) • Binary Fission. • • • • Asexual Single loop of DNA is replicated during S phase of Interphase Cell splits into 2 identical cells, each with 1 DNA molecule New cells are clones to self and to the parent • Eukaryotes • Mitosis • • • • • Chromosome homologues are split 2 identical copies of DNA (2n) Cytokinesis divides cytoplasm 2 daughter cell clones All somatic cells Unicellular eukaryotes reproduce asexually Sponges, flatworms, seaweed, fungi, and plants • Meiosis • Form sex cells (gametes: ova & sperm) with ½ amount of DNA (1n) • All cells transfer DNA from parent to daughter cells/ offspring Binary Fission Mitosis Germline cells Plant vs Animal Cell Cycle
