Fig. 7. ix and dsx act interdependently to activate Yp reporter expression in females. (A) Progeny from pML-58/pML-58; ix3/SM; ry/ry mothers crossed to w/Y; ix2/CyO; P[ix+ 9.5]/MKRS fathers. (B) Progeny from pCR1/pCR1; ix3/CyO; dsx pp/MKRS mothers crossed to w/Y; Df(2R)enB/CyO; dsx127/MKRS fathers. Mean lacZ activity is plotted for each progeny genotype, in units of OD574/minute/mg fly, based on the CPRG assay. Error bars are +1 s.e.m. Each genotype was assayed at least in triplicate.