Polytene chromosomes normal.
Deleted for truncated roo insertion and sequences 5' to the insertion extending to sequences essential for P1 transcription.
lethal
Lethal when heterozygous with Antp17, but viable with Antp1 or Antp23.
Antp23
Antp1
Antp17
Denell.
Revertant.
Promoter P1 activity and ectopic P2A activity are destroyed, normal P2B function is intact.
Promoter P1 activity and ectopic P2A activity are destroyed, normal P2B function is intact.