Cell Division Prokaryotic binary fission sporulation Eukaryotic

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Presentation transcript:

Cell Division Prokaryotic binary fission sporulation Eukaryotic mitosis meiosis Figures\Chapter09\High-Res\life7e-fig-09-01-0.jpg

Prokaryotic Cell Division - Binary Fission Figures\Chapter09\High-Res\life7e-fig-09-02-0.jpg

Eukaryotic DNA is Packaged into Chromosomes Figures\Chapter09\High-Res\life7e-fig-09-06-0.jpg

Chromosomes, Chromatids, and Chromatin Figures\Chapter09\High-Res\life7e-fig-09-05-0.jpg

Karyotypes spectral karyotype Figures\Chapter09\High-Res\life7e-fig-09-13-0.jpg

Numbers of Chromosomes in Some Plant and Animal Species Figures\Chapter09\High-Res\life7e-tab-09-01-0.jpg Yeast Saccharomyces cerevisiae 16

Mitosis Figures\Chapter09\High-Res\life7e-fig-09-08-1.jpg

The Mitotic Spindle Consists of Microtubules Figures\Chapter09\High-Res\life7e-fig-09-07-0.jpg

Mitosis Figures\Chapter09\High-Res\life7e-fig-09-08-2.jpg

Mitosis Figures\Chapter09\High-Res\life7e-fig-09-08-3.jpg

Cytokinesis Differs in Animal and Plant Cells Figures\Chapter09\High-Res\life7e-fig-09-10-0.jpg

The Eukaryotic Cell Cycle Figures\Chapter09\High-Res\life7e-fig-09-03-0.jpg

Checkpoints in Cell Cycle Progression G1 to S and G2 to M transitions are regulated by proteins called cyclin- dependent kinases (Cdks) and cyclins 18_04_Feedback.jpg

Cyclin proteins and Cdk activity Cyclin proteins are made and destroyed in a cyclic pattern during the cell cycle Cdks are activated by binding to one of several different cyclin proteins 18_06_M_Cdk.jpg

Cyclins and activation of Cdks 18_13_Cdks_cyclins.jpg

Cyclin-Dependent Kinases and Cyclins Regulate Transitions in the Cell Cycle MPF Cdk-cyclin complexes each phosphorylate different target proteins to regulate progression of the cell cycle p53 Figures\Chapter09\High-Res\life7e-fig-09-04-0.jpg

Disruption of Cell Cycle Control Cyclin-Cdk complexes act as checkpoints. When functioning properly, they allow or prevent passage to the next stage of the cell cycle In cancer cells, these checkpoints are often disrupted Rb/p105 (retinoblastoma) Loss of Rb permits unregulated cell division p53 Loss of p53 prevents synthesis of p21 which allows production of cyclin D

Asexual Reproduction Figures\Chapter09\High-Res\life7e-fig-09-11-0.jpg

Meiosis and Alternation of Generations in Sexual Reproduction Figures\Chapter09\High-Res\life7e-fig-09-12-1.jpg

Meiosis I Figures\Chapter09\High-Res\life7e-fig-09-14-1.jpg

Crossing Over Forms Genetically Diverse Chromosomes Meiotic Recombination Figures\Chapter09\High-Res\life7e-fig-09-16-0.jpg

Chiasmata: Evidence of Exchange between Chromatids Figures\Chapter09\High-Res\life7e-fig-09-15-0.jpg

Meiosis I Figures\Chapter09\High-Res\life7e-fig-09-14-2.jpg

Meiosis I Figures\Chapter09\High-Res\life7e-fig-09-14-3.jpg

Meiosis II Figures\Chapter09\High-Res\life7e-fig-09-14-4.jpg

Meiosis II Figures\Chapter09\High-Res\life7e-fig-09-14-5.jpg

Meiosis II Figures\Chapter09\High-Res\life7e-fig-09-14-6.jpg

Mitosis and Meiosis: A Comparison Figures\Chapter09\High-Res\life7e-fig-09-17-1.jpg

Mitosis and Meiosis: A Comparison Figures\Chapter09\High-Res\life7e-fig-09-17-2.jpg

Nondisjunction Leads to Aneuploidy Figures\Chapter09\High-Res\life7e-fig-09-18-0.jpg

Apoptosis: Programmed Cell Death Figures\Chapter09\High-Res\life7e-fig-09-19-0.jpg

Two Different Ways for Cells to Die Figures\Chapter09\High-Res\life7e-tab-09-02-0.jpg

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