The wings of dpps4
flies have dramatically shortened L2, L4 and L5 wing veins and lack both cross veins.
flies have a "shortvein" phenotype; the distal ends of L2, L4 and L5 are truncated. The posterior crossvein is missing.
Wings derived from dppd6
animals lack only the anterior crossvein.
flies lack the distal ends of wing veins LII, LIV and LV. dpps4
flies lack most of wing veins LII, LIV and LV.
Late embryos fail to evaginate gastric caeca and fail to form secondary midgut constrictions, and the primary midgut constriction is posteriorly displaced.
Midguts from dpps4
larvae lack all four gastric caecae.
Used to show absolute dependence on dpp
expression in midgut.
homozygotes lack the second midgut constriction.