14 - Cellcycology

14 - Cellcycology - Lecture 14: The cell cycle, part 2 The...

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Lecture 14: The cell cycle, part 2
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Figure 17-28 Molecular Biology of the Cell (© Garland Science 2008) The metaphase spindle: a dynamic structure under tension
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Figure 17-46 (part 1 of 2) Molecular Biology of the Cell (© Garland Science 2008) Two mechanisms work in concert to ensure proper segregation of chromosomes during anaphase: Anaphase A & Anaphase B
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Figure 17-46 (part 2 of 2) Molecular Biology of the Cell (© Garland Science 2008) Two mechanism s work in concert to ensure proper segregation of chromosom es during anaphase: Anaphase A & Anaphase B
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How are the events of mitosis connected to the Cdk cycle?
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M-Cdk separase cohesin rings M-Cdk
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M-Cdk separase cohesin rings Anaphase-Promoting Complex (APC) securin M-Cdk
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M-Cdk separase cohesin rings Anaphase-Promoting Complex (APC) securin M-Cdk Cdc20 Cdh1
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M-Cdk separase cohesin rings Anaphase-Promoting Complex (APC) securin Cdc20 Cdh1 M-Cdk
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Figure 17-48 Molecular Biology of the Cell (© Garland Science 2008) Homologous xsomes are paired up by recombinational crossovers (chiasmata) that occur after pre- meiotic S phase but before meiosis I. Meiosis is a variation on mitosis
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Figure 17-48 Molecular Biology of the Cell (© Garland Science 2008) Recall that the sister chromatids are linked by cohesin rings. The rings that encircle the arms differ from those that encircle the centromere Meiosis is a variation on mitosis
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Figure 17-48 Molecular Biology of the Cell (© Garland Science 2008) Arm cohesion is released in meiosis I but centromere cohesion is retained. This resolves crossovers and allows homologs to separate Meiosis is a variation on mitosis
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ure 17-48 Molecular Biology of the Cell
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This note was uploaded on 01/12/2012 for the course BI 9 taught by Professor Aravin during the Spring '10 term at Caltech.

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14 - Cellcycology - Lecture 14: The cell cycle, part 2 The...

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