neuromuscular junction & bouton
The homeotic phenotypes attributed to the original chromosome carrying nejQ7 most likely arise from second site mutations because none of the deletion mutations have any homeotic effects.
Heterozygous larvae show a decrease in presynaptic transmitter release (quantal content) without any change in quantal size at the neuromuscular junction. There is a significant (although moderate) increase in the number of boutons at the neuromuscular junction of muscles 4, 6 and 7 compared to wild type in nejEP1149/nejQ7, nejEP1179/nejQ7 or nejQ7/+ larvae. No alteration in axon guidance in the embryonic central nervous system is seen.
Transheterozygotes of nejQ7 with nejS342 die at the embryonic/larval border. Transheterozygotes of nejQ7 with nejTA57 die in the embryonic stages. Embryonic cuticles of nejTA57/nejQ7 or nejQ7/Y show maxillary and antennal sense organs often have a slight pattern deformation, mouth hooks and median tooth are reduced and the proventriculus is sclerotinized.
nej[+]/nejQ7 is an enhancer of partially lethal - majority die phenotype of Dfd13/Dfd3
nejQ7 is a suppressor of visible phenotype of HUAS.cMa, Scer\GAL4GMR.PF
nejQ7, Scer\GAL430A is a non-enhancer of wing phenotype of Pka-C1UAS.cKa, Scer\GAL430A
nejQ7 is a suppressor of eye phenotype of HUAS.cMa, Scer\GAL4GMR.PF
nejQ7 is a suppressor of wing margin phenotype of ciD
nejQ7, Scer\GAL430A is a non-suppressor of wing phenotype of Pka-C1UAS.cKa, Scer\GAL430A
nej+mSa does not rescue the lethality associated with nejQ7, suggesting that the nejQ7 chromosome carries a second site mutation in addition to nejQ7.
nejT:SV5\V5 does not rescue the lethality associated with nejQ7, suggesting that the nejQ7 chromosome carries a second site mutation in addition to nejQ7.