ch08_lecture - Cell Division and Mitosis Chapter 8...

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Cell Division and Mitosis Chapter 8
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Understanding Cell Division* What instructions are necessary for inheritance? How are those instructions duplicated for distribution into daughter cells? By what mechanisms are instructions parceled out to daughter cells?
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Reproduction* Parents produce a new generation of cells or multicelled individuals like themselves Parents must provide daughter cells with hereditary instructions, encoded in DNA, and enough metabolic machinery to start up their own operation
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Division Mechanisms* Eukaryotic organisms Mitosis Meiosis Prokaryotic organisms Prokaryotic fission
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Roles of Mitosis* Multicelled organisms Growth Cell replacement Some protistans, fungi, plants, animals Asexual reproduction
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Chromosome* Duplicated in preparation for mitosis one chromosome (unduplicated) one chromosome (duplicated)
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Chromosome Number* Sum total of chromosomes in a cell Somatic cells Chromosome number is diploid (2 n ) Two of each type of chromosome Gametes Chromosome number is haploid ( n ) One of each chromosome type
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ch08_lecture - Cell Division and Mitosis Chapter 8...

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