amorphic allele - genetic evidence
gap phenotype | embryonic stage | recessive
lethal - all die during embryonic stage | recessive
some die during embryonic stage | recessive
cephalopharyngeal skeleton
embryonic abdominal segment | posterior
embryonic mesothoracic segment
embryonic metathoracic segment
embryonic prothoracic segment
Homozygous embryos exhibit loss of thoracic segments, disruption of larval mouthparts, abnormal posterior abdominal segments and a poorly formed cephalopharyngeal skeleton.
Bender.