Heterozygotes have ectopic wing vein material perpendicular to the posterior crossvein and anterior to longitudinal vein L2. These defects are seen at the permissive temperature (18[o]), with increased penetrance at the restrictive temperature (29[o]C).
Heterozygotes show a weak extra vein extending distally from the posterior crossvein. Snr1R3
flies have an extra vein phenotype in the wings, with extra vein material posterior to wing vein L5 and extending distally from the posterior crossvein.
C, 68% of heterozygous flies have an ectopic vein emanating from the posterior crossvein of the wing and 32% have wild-type wings. Snr1SR21
adults have extensive disruptions of wing vein patterning at 29o
C. Heterozygous and homozygous adults have an increased body mass and wing size at 18o
C compared to controls. Homozygous flies have an increased cell number (cells per unit area in the wing) compared to controls. Homozygous stage P3 pupae have a significantly increased body mass compared to control pupae.
is a temperature-sensitive allele of Snr1
. Genetic analyses of Snr1E1
reveal that it functions as an antimorph.