Figure 4From: Long-term trends in evolution of indels in protein sequencesHistogram of regression coefficients calculated by approximating the dependence of individual spacer lengths on the evolutionary distance according to model #2. “Stable” domains with no statistically significant tendency to change size in evolution are shown in grey, domains increasing and decreasing in size (with P-values < 0.01) are shown in black and white correspondingly.Back to article page