Before revision:  To illustrate our approach, we use as a case study a Boolean network model for  the cell cycle regulation of the single-celled fission yeast (Schizosaccharomyces Pombe) and compare its informational properties to two classes of null model that share commonalities in their causal structure .
After revision:  To illustrate our approach, we use as a case study a Boolean network model for the cell cycle of null model that share commonalities in their causal structure .