bk1 hits ftz << bk2 hits pum
Dominant Scr phenotype (Sato et al., 1983). Recessive lethal (Duncan and Kaufman, 1975, Genetics 80: 733-52).
"84B;85C--D" was stated as revision. Cytogenetic, genetic and molecular analysis of Barker et al., (Genes Dev 6:2312--2326 ) and Kemphues et al., (Genetics 105:345--356 ) supports 85C location of the right break of this inversion as opposed to 84F.