ewg << bk1 << arth << pcl << bk2 << ase << sc << bk3
slight suppression of scutellar chaetae (Garcia-Bellido and Santamaria, 1978). Homozygous clones in wing survive but fail to differentiate sensilla (Schubiger and Palka, 1985, Dev. Biol. 108: 399-410). Df(1)sc19 is deficient for y, ac, sc, and scl but not l(1)1Ac, om, or RpL36; it is male lethal but survives in the heterozygous female. Dp(1;2)sc19 carries, in addition to sc19, normal alleles of y, ac, and scl; it is viable homozygous and does not affect crossing over in 2L. X-ray-induced losses of y+ from the transposed fragment are M and male and female sterile (Velissariou and Ashburner, 1980, Chromosoma 77: 13-27).