In human and Drosophila eyes, photoreceptors sensitive to different wavelengths of light are distributed in stochastic patterns. One such patterning system has been analyzed in detail in the Drosophila retina. Ebadi et al. present a model that is capable of explaining both the stochastic Drosophila eye and the striped pattern of Dolichopodidae eyes and characterize the least number of underlying developmental rules necessary to produce both stochastic and deterministic patterns.
Image credit: Ebadi et al.