No unique changes were found on sequencing the dpp coding region or 5' and 3' untranslated regions.
Dominant lethality greater than 50%. Homozygous and transheterozygous embryos were examined with respect to 25 cuticular markers, results demonstrate a graded requirement for dpp along the dorso-ventral axis.
Blackman.
Based on considerations of degree of dominant lethality, dpp alleles can be placed in an allelic series. Progressing from weakest to most severe the series is: dppe87 < dppe90 < dpphr56 < dpphr4 < dpphr92 < dpphr27 < dpphr93 < dppH94 < dppH95 < dppH96 = dppH91 = dppH46.