Figure 1.

Figure 1. From: A fractal model for nuclear organization: current evidence and biological implications.

Examples of 2D and 3D fractals. (a) The romanesco broccoli is one of the most popular natural fractal architecture. (b) The left panel shows the first, second, third and fifth iterations for the recursive construction of a 2D Hilbert fractal. The right panel is a 3D Hilbert curve, which fractal dimension is equal to f = 3. These two examples constitute deterministic fractals. (c) The picture represents a 3D crumpled globule polymer conformation (with permission from the AAAS (11)), which is a maximally compact, knot-free and fractal architecture. (d) Dark pixels form a 2D percolation cluster, which is obtained by clustering randomly distributed elements using nearest-neighbor connections. The fractal dimension of a percolation cluster is f = 2.5.

Aurélien Bancaud, et al. Nucleic Acids Res. 2012 October;40(18):8783-8792.

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