Transcripts can be detected in nonneural tissues in males but not in females. Staining is clearly nuclear, confined to discrete compartments in the large polyploid cells of the gastric ceca, the ring gland and the nephrocytes, and in the polytene salivary glands . Adult roX1 transcripts are present in cells of the central nervous system of male but not female flies. Most or all cells in the brain and thoracic ganglia stain strongly. Both genes are also expressed in peripheral neurons, notably the photoreceptor cells , as well as the olfactory neurons in the third antennal segment.
Expression is observed in the thoracic gland and in a small region of the digestive tract.
Effects of mutation or deletion Mutant flies are without any obvious defects in viability or fertility. Genes expressed in neurons of adult male Drosophila. 459-469 Chiba, A., et al. Fasciclin III as a synaptic target recognition molecule in Drosophila. J. Cell Biol.