The maternal ventralizing locus torpedo is allelic to faint little ball, an embryonic lethal, and encodes the Drosophila EGF receptor homolog.

@article{Price1989TheMV,
  title={The maternal ventralizing locus torpedo is allelic to faint little ball, an embryonic lethal, and encodes the Drosophila EGF receptor homolog.},
  author={James V. Price and R J Clifford and Trudi Sch{\"u}pbach},
  journal={Cell},
  year={1989},
  volume={56 6},
  pages={1085-92}
}
The torpedo gene of Drosophila melanogaster is involved in the establishment of the dorsoventral pattern of eggshell and embryo. We have isolated new alleles of torpedo and have found that torpedo is allelic to the zygotic embryonic lethal faint little ball. We have shown that torpedo resides in subdivision 57F on the second chromosome--at the same location as the Drosophila homolog of the EGF receptor (DER). Using a cosmid that contains most of the DER coding region as a hybridization probe… CONTINUE READING