Build:

Before beginning the simulation
of mitosis,  the chromosomes
must be built:

1.  Click and drag the yellow centromere 
     to the center of the left guideline.
     Click and drag the red centromere to
     the center of the right guideline.

2.  Click and drag all of the yellow beads 
     to the left guideline.  Click and drag
     all of the red beads to the right guideline.

3.  The chromosomes are now built.
     Click here to advance to next
     step.