Chromosomes, the Cell Cycle, and Cell Division

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Chromosomes, the Cell Cycle, and Cell Division
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Cell Division

• 4 prerequisites
• reproductive signal
• replication of DNA
• segregation of DNA
• cytokinesis

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Prokaryotic vs. Eukaryotic Cell Division

• fission
• prokaryotes
• mitosis or meiosis and cytokinesis
• eukaryotes

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Cell Cycle

• interphase
• G1
• S
• G2
• mitosis

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Chromosomes

• prokaryotic chromosome
• single, circular chromosome
• eukaryotic chromosomes
• comprised of condensed chromatin

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Eukaryotic Chromosome

• before S phase
• each chromosome made of 2 arms
• after S phase
• each chromosome consists of 2 chromatids
• chromatids joined at centromere

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