Figure 2:

Contact probabilities in interphase chromatin. A) Schematic of a contact between two loci (green circles) separated by genomic distance $s$ (purple curve). The contact probability between the two green loci $P(s)$ is proportional to a power law $P(s)\sim s^{-{\gamma }_i}$ where the subscript $i$ indicates a specific regime. ${\gamma }_i\approx 3/D_i$ within a mean-field approximation, where $D_i$ is the fractal dimension. B) Schematic plot of the average contact probability $P(s)$ for chromatin as a function of genomic separation $s$ with three scaling regimes on a log-log scale.