Fig 1.
Somatic sex maintenance in the Drosophila testis.
Left: in XY adults, chinmo prevents Zld protein expression, keeping traF off and allowing dsxM to maintain the male fate (blue) while the female pathway is switched off (gray). Right: loss of chinmo leads to the ectopic expression of zld, inducing traF and activating the female developmental program (red) in chromosomally male cells.