Homozygous females lay eggs that do not develop and have the appearance of old unfertilised eggs. Homozygous flies have wing defects: shortening of wing vein L5. vri¹/vri³ and vri²/vri³ transheterozygotes also exhibit shortening of wing vein L5. vri³/Df(2L)tkv2 transheterozygotes exhibit shortening of wing vein L2 and L5.

Eggs derived from homozygous females show no visible sign of embryonic development when observed under transmitted light in a stereo microscope. After 4-6 hours after egg deposition the originally unformly dense (like wild type) yolk mass starts to disintegrate into a network of darker and lighter yolk droplets. The defect may be in fertilisation or very early in embryonic development.

dpp^hr27, vri³ has wing phenotype

dpp^hr27, vri³ has wing vein | ectopic phenotype

dpp^hr27, vri³ has thorax phenotype

dpp^hr27, vri³ has wing vein phenotype