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Chapter 9 Mitosis and Meiosis Review graphics Fig. 12-4 0.5 µm Chromosomes Chromosome arm Centromere DNA molecules Chromosome duplication (including DNA synthesis) Sister chromatids Separation of sister chromatids Centromere Sister chromatids Fig. 12-5 G1 S (DNA synthesis) G2 Fig. 12-6 G2 of Interphase Centrosomes (with centriole pairs) Chromatin (duplicated) Plasma Nucleolus Nuclear envelope membrane Prophase Early mitotic spindle Aster Metaphase Prometaphase Centromere Chromosome, consisting of two sister chromatids Fragments of nuclear envelope Kinetochore Nonkinetochore microtubules Kinetochore microtubule Anaphase Cleavage furrow Metaphase plate Spindle Centrosome at one spindle pole Telophase and Cytokinesis Daughter chromosomes Nuclear envelope forming Nucleolus forming Fig. 12-7 Aster Centrosome Sister chromatids Microtubules Chromosomes Metaphase plate Kinetochores Centrosome 1 µm Overlapping nonkinetochore microtubules Kinetochore microtubules 0.5 µm Fig. 12-9 100 µm Cleavage furrow Contractile ring of microfilaments (a) Cleavage of an animal cell (SEM) Vesicles forming cell plate Wall of parent cell Cell plate 1 µm New cell wall Daughter cells Daughter cells (b) Cell plate formation in a plant cell (TEM) Fig. 13-7-3 Interphase Homologous pair of chromosomes in diploid parent cell Chromosomes replicate Homologous pair of replicated chromosomes Sister chromatids Diploid cell with replicated chromosomes Meiosis I 1 Homologous chromosomes separate Haploid cells with replicated chromosomes Meiosis II 2 Sister chromatids separate Haploid cells with unreplicated chromosomes Fig. 13-8 Metaphase I Prophase I Centrosome (with centriole pair) Sister chromatids Chiasmata Spindle Centromere (with kinetochore) Prophase II Metaphase II Anaphase II Telophase II and Cytokinesis Sister chromatids remain attached Metaphase plate Homologous chromosomes separate Homologous chromosomes Fragments of nuclear envelope Telophase I and Cytokinesis Anaphase I Microtubule attached to kinetochore Cleavage furrow Sister chromatids separate Haploid daughter cells forming
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