Computational hint for the cell cycle problem
XPP allows you to compute the times between events as well as spewing
output only when the events occur. I have modified the cell cycle
file that is used for the homework to exploit this. Here is the new file .
The differences are
Try running this file for the mutants since the times and masses can
be directly read off.
- I set total time longer
- I set DT smaller
- I turned on the Poincare Section feature to detect when cyclinB
hits .105 (not eaxctly .1 since it is confounded by the halving of the
mass.) I have told XPP to also only print out the valuse of all
quantities at this point and also to plot the time differences between
- If you run this file, then the Data Browser will have only a few
numbers; in particular, the times when cycB above 0.1 and below which
are the G1 and S-G1-M lengths and the mass right before division