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Cell growth, Division and Reproduction. Cell Division. Produces 2 daughter cell Asexual Reproduction – produces genetically identical offspring from a single parent. Binary fission in prokaryotic cells Mitosis in eukaryotic cells
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Cell Division • Produces 2 daughter cell • Asexual Reproduction – produces genetically identical offspring from a single parent. • Binary fission in prokaryotic cells • Mitosis in eukaryotic cells • Sexual Reproduction – offspring produced by reproductive cells of 2 parents. • Meiosis – inherit genetic information from each parent
Mitosis • Division of the nucleus • Asexual reproduction • Body cells – somatic cells • 4 phases • Prophase • Metaphase • Anaphase • Telophase
Interphase • Growth, DNA synthesis • Prep for Mitosis • Chromatin material, no chromosomes
Prophase • Longest phase • Genetic material condenses • Chromosomes visible • Nuclear envelope disappears • Spindles forming
Metaphase • Centromeres of chromosome line up across center of cell • Spindle fibers connect centromere of chromosome to 2 poles of cell
Anaphase • Sister chromatids separate and begin to move apart. Each chromatid is not considered a chromosome.
Telophase • Chromosomes uncoil , nuclear envelope reappears, spindle begins to break apart, nucleolus visible. • Cell division complete
Cytokinesis • All that is left is to split the cytoplasm, usually occurs same time as telophase. • Cell is split into 2 • Animal cell has actin filament that draws in membrane, plant cell produces cell plate