Imprecise excision of the P{EP}prodEP2435 element, resulting in a 4.1kb deletion which removes both prod and Topors sequences (the deletion includes the Topors promoter and translation initiation site).
ToporsAA mutants (Df(2R)ToporsAA homozygotes in which prod function has been rescued by prod+t5.1) are viable.
Topors[+]/ToporsAA is a suppressor | partially of embryonic/first instar larval cuticle | pair rule expression pattern phenotype of hry30/hry26