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cell cycle - Coggle Diagram

- - - - meiosis II
        
        halves the amount of genetic information in each chromosome
      - interphase
      - meiosis I
        
        halves the number of chromosomes & cross over happens
  - - - interphase : phase of the cell cycle during which the chromosomes are decondensed and found in the nucleus (G1, S, G2)
      - prophase
        
        nuclear envelope breaks down
        
        chromosomes condense
      - telophase
        
        Chromosomes have reached their respective poles and decondense
        Nuclear membranes now re-form to produce two separate nuclei
      - cytokinesis
        
        Two nuclei are segregated into separate daughter cells
        
        Animals – cleavage furrow constricts like a drawstring to separate the cells
        
        Plants – cell plate forms a cell wall between the two daughter cells
      - anaphase
        
        Connections broken between sister chromatids
        
        Each individual chromatid is linked to only one pole by kinetochore microtubules
        
        Kinetochore microtubules shorten, pulling chromosomes toward the pole to which they are attached
        
        The two poles move away from each other .as overlapping polar microtubules lengthen and push against each other
      - metaphase
        
        Pairs of sister chromatids are aligned along a plane halfway between the poles called the metaphase plate
        
        Organized into a single row
        
        When this alignment is complete, the cell is in metaphase
      - prometaphase
        
        Nuclear envelope completely fragments
        
        Mitotic spindle is fully formed during this phase
        
        Centrosomes move apart and demarcate the two poles
        
        Spindle fibers interact with sister chromatids
        
        Two kinetochores on each pair of sister chromatids are attached to kinetochore microtubules from opposite poles