In bap208 mutant embryos, the frontal sac is normal.
Embryonic cuticle is wild type.
Mesoderm phenotype: reduced number of visceral mesoderm cells, the cells have irregular shapes and are not columnar. Mutation causes a transformation of a portion of cells from a visceral mesoderm fate to assume the identity of somatic or gonadal mesoderm. In the absence of visceral mesoderm the endoderm fails to migrate. Musculature of the foregut, hindgut, and the heart appear normal.
Phenotype is not rescued by Mmus\Nkx2-5Scer\UAS.cRa expression in the midgut.
bap208 is rescued by Scer\GAL4twi.PB/Scer\GAL4Mef2.PR/bapUAS.cRa