Biol 190 DG Ch 12 - Chapter 12 The Cell Cycle OVERVIEW THE...

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Chapter 12: The Cell Cycle OVERVIEW: THE KEY ROLES OF CELL DIVISION Cell division th edition; Figure 12.2] 12.1: CELL DIVISION RESULTS IN GENETICALLY IDENTICAL DAUGHTER CELLS Mitosis : Cell division involving distribution of idential genetic material (DNA) to 2 daughter cells Meiosis Genome : A cell’s genetic information -> Prokaryotic genome: single long DNA molecule -> Eukaryotic genome: number of DNA molecules Chromosomes : what DNA molecules are packaged into Every eukaryotic species has a single characteristic number of chromosomes in each cell nucleus. Somatic cells : all body cell that aren’t reproductive cells Gametes : reproductive cells Eukaryotic chromosomes are made of chromatin (DNA complex; associated protein molecules) To prepare for cell division (after DNA duplication), the chromosomes condense Each duplicated chromosome has two sister chromatids (the 2 chromatids have identical DNA molecules) Centromere : where the 2 chromatids are attached Mitosis -> nucleus divides -> followed by cytokinesis (cytoplasm divides) -> where there was one (parent) cell, there are now two - genetically the same as parent cell
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This note was uploaded on 11/15/2011 for the course BIOL 190 taught by Professor Ellis during the Fall '11 term at University of Nevada, Las Vegas.

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Biol 190 DG Ch 12 - Chapter 12 The Cell Cycle OVERVIEW THE...

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