Developmental delay and reduced bristle phenotype.

Bristles on the fly, especially those on the head and thorax, are shorter and more slender than those of the wild type. Pupal development takes 2-3 days longer than in the wild type siblings. Other phenotypes shown to a variable extent are small size, abnormal abdominal bands, reduced aristae, irregular venation, pale body color, and female sterility or low fecundity. Daughters of heterozygous females show occasional clones due to loss of the M(1)18C¹ chromosome. When the homologous chromosome is marked with y¹ the mosaic flies show a piebald phenotype. Clones in the eye, using a homologue marked with w^e reveal that the tissue in the clone is male. The loss of the M(1)18C¹ chromosome does not affect the autosomes for which the clones remain diploid. Homologs carrying sn¹ or f⁵ revealed that clones can occur anywhere on the body, though are most frequently detected in the eye. The small size of the clones suggests that they are formed relatively late in development.

Heterozygous females have Minute bristles. Lethal in males. Viability and fertility low. Pupation delayed about 42 hr at 25^oC (Brehme). Wing cells smaller than normal (Brehme, 1941). RK2. Heterozygous females have Minute bristles. Lethal in males. Viability and fertility low. Pupation delayed about 42 hr at 25^oC (Brehme). Wing cells smaller than normal (Brehme, 1941).

Delta¹, RpS10b¹ has lethal | dominant phenotype

Dl[+]/Delta¹, RpS10b¹ has lethal | dominant phenotype