Polytene chromosomes normal.
Breakpoint mutation 20kb upstream of the en transcription unit.
en24 has embryo phenotype, suppressible by Agam\eninv-12A
en24 has embryo phenotype, suppressible by Agam\enen-12A-5R
en24 has embryo phenotype, suppressible by Agam\enen-10B-5
Agam\eninv-12A rescues many aspects of the embryonic phenotype. Agam\enen-12A-5R and Agam\enen-10B-5 rescue causes slight defects in the posterior compartments of the wings, both sexes are fertile.
Kornberg.