biological pattern specification process, part of ommatidial planar polarity: photoreceptors are arranged in ommatidia in the dorsal and ventral fields as mirror images; polarity established in the imaginal discs along with cell fate specification
biological pattern specification process, part of ommatidial planar polarity: photoreceptors are arranged in ommatidia in the dorsal and ventral fields as mirror images; polarity established in the imaginal discs along with cell fate specification (en)