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10-Cellular Division-STUDENTVERSION-2

10-Cellular Division-STUDENTVERSION-2 - The Cell Cycle...

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1/3/2013 1 The Cell Cycle Concepts 12.1-12.3 (pp. 228-244) Learning Objectives Successful students will be able to: Explain the various reasons that cells divide Describe how DNA is organized and why organization is important for proper division Explain the process of cellular division, including the different phases and major events of each stage Compare and contrast cellular division in eukaryotes and prokaryotes Describe the mechanisms used to regulate the cell cycle and what can happen if they fail Cellular Division “Omnis cellula e cellula”
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1/3/2013 2 Reasons cells divide _____________ _____________ _____________ _____________ Types of Cellular Division __________ Mitosis Binary Fission __________ Meiosis
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1/3/2013 3 Organization of DNA There is A LOT of DNA in your cells 2 m of DNA per cell 2 x 10 13 m in the entire body = 67 trips to the sun and back ~__________ base pairs ~20-25,000 genes (only 2%) __________- the DNA of a cell Prokaryotes single circular chromosome Eukaryotes _______________ Cells often contain two copies of each chromosome (homologous chromosomes)
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1/3/2013 4 What is DNA Composed of subunits called_____________ 3 components ________________ ________________ ________________ Double helix Strands are complementary __ pairs with __ __ pairs with __ Chromosomes Composed of ________ DNA + proteins (histones) 2 forms of chromatin _____________ Highly condensed
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10-Cellular Division-STUDENTVERSION-2 - The Cell Cycle...

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