His3.3A2X1, His3.3AK9R.Tag:FLAG, His3.3B0 has partially lethal - majority die phenotype
His3.3A2X1, His3.3AK9R.Tag:FLAG, His3.3B0 has male fertile phenotype
His3.3A2X1, His3.3B0 double mutant males also carrying a His3.3AK9R.T:Zzzz\FLAG transgene are fertile, but they show reduced viability.