I have a gene network that I clustered into 8 parts. I calculated the degree distribution of the clusters using Cytoscape and the slope of the clusters range from $0.7$ to about $1.3$.
From literature (reference) usual scale free networks (real world networks) have a slope range of $2>γ>3$. What could be a reason for my network to have the smaller slope value?
Edit: The number of nodes of each cluster ranges from 431 to 187 and the number of edges range from 1009 to 263. The network is bipartite in nature. The clusters are all very sparse which can be understood by the number of edges in the largest and smallest cluster. Are real world biological networks not always scale free. Can anyone point me towards publications that mention this fact. I am just confused about why my network doesn't conform to the norm but maybe it doesn't need to.