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18 Ways to Make a Baby  
How Cells Divide: Mitosis vs. Meiosis
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Mitosis


Meiosis





Prometaphase
The centrioles are now at opposite ends of the cell.

The spindle fibers from both of the centrioles attach to each one of the chromosomes.


Prometaphase I
Same as in mitosis, except that the spindle fibers from each centriole attach to one chromosome of a matching chromosome pair.

In other words, the fibers from one centriole attach to 23 chromosomes, and the fibers from the other centriole attach to the other 23 chromosomes. (Again, only four chromosomes are shown here in order to simplify the illustration.)



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