Construct: A 2.4kb genomic SpeI-KpnI E(spl) fragment (-1174 to +1243) is flanked by gypsy\su(Hw)BR430 insulator sequences.
chaeta & mesothoracic tergum
Flies expressing E(spl)gypsy\su(Hw)BR-430 show very mild bristle loss on the notum.