D'Arcy Thompson's famous comparison of protistan cells to Plateau's surfaces of revolution-shapesof minimal area with radialsymmetry around a single axis.
5
Cilia are nucleated, anchored and aligned at the plasma membrane by basal bodies, which are cylindrical microtubule-based structures with ninefold radialsymmetry.
6
I wonder if it's a consequence of their bodies' radialsymmetry: their bodies have no 'forward' direction, so maybe their writing doesn't either.
7
Five, for all I know, may be optimal for the radialsymmetry of echinoderms, and therefore predictable for any phylum in their domain.
8
Flowers, in general, come in two types: the radialsymmetry of the daisy or sunflower, or the bilateral symmetry of the lily or orchid.
9
Punctate signal are localized through iterative voting and radialsymmetries for improved reliability and robustness.
10
Radialsymmetry might be the preferred design option: an entire ecosystem of creatures that looked like starfish, perhaps, with eight, or ten, or fifteen arms.