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Cell Division Phases
  
Interphaseby biology flashcards on Flickr

A lot happens in Interphase!

(G1) Growth  - most time spent here
                          cell grows larger
                          making more organelles
                     
(S) Synthesis of DNA - exact copy of DNA

(G2) more Growth- final prep before Mitosis

 
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Prophaseby biology flashcards on Flickr

Mitosis begins here!

1. Prophase = longest phase of Mitosis
  • Cell prepares to divide the nuclear contents (DNA) equally
  • Centrioles move to "poles" of cell
  • DNA forms visible chromosomes
  • Each stays attached to it's copy (chromatids)
  • Spindle fibers form
  • Nuclear envelope (membrane) breaks up

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Metaphaseby biology flashcards on Flickr

2. Metaphase = MIDDLE
  • Chromatids attach to spindle
  • Chromatids line up in the MIDDLE (equator) of the cell


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Anaphaseby biology flashcards on Flickr

3. Anaphase = APART
  • Spindle pulls chromosomes APART towards opposite "poles"
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Telophaseby biology flashcards on Flickr

4. Telophase = TAIL-end of MITOSIS
  • Chromosomes unravel
  • (2) New nuclear envelopes form

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