In the non-RNAi control embryos, GFP:H2B was not detected in any of the blastomeres until the 28-cell stage, similar to endogenous NOS-2 expression. By contrast, in the case of
oma-1(RNAi)
oma-2(RNAi) double mutants , significantly higher levels of GFP:H2B were first detected in oocytes.