GENERAL BIOLOGY9Mitosis

GENERAL BIOLOGY9Mitosis - MITOSIS: CHAPTER 9 Cell division...

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MITOSIS: CHAPTER 9 Cell division in prokaryotes takes place in two stages, which together make up a simple cell cycle Prokaryotic simple cell cycle : binary fission (cell splits by a process called binary fission) In prokaryotes, the hereditary information (genes) in encoded in a circle of DNA Before the cell divides, the DNA circle makes a copy of itself (REPLICATION) by unzipping When the unzipping has gone all the way around the circle, the cell possesses two copies of hereditary information When the DNA has been copied, the cell grows by ELONGATION Newly replicated DNA molecules are partitioned toward each end of the cell When the cell reaches an appropriate size, the prokaryotic cell begins to split into 2 equal halves The plasma membrane pushes inward and the cell splits forming two daughter cells (each contains one prokaryotic chromosome and is a complete living cell in its own right) Eukaryotic complex cell cycle : Mitosis (somatic cells) Eukaryotes are much larger than prokaryotes and contain much more DNA Eukaryotic chromosome – single, long DNA molecule wound tightly around proteins, called histones , into a compact shape Either go Mitosis or Meiosis to divide up the DNA Mitosis is the mechanism of cell division that occurs in an organism’s nonreproductive cells,
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GENERAL BIOLOGY9Mitosis - MITOSIS: CHAPTER 9 Cell division...

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