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Video 5 (6.2 MB)
Montage of the wild-type andthe air-1(RNAi) embryo expressing GFP-{alpha}-tubulinandGFP histone invideos3 and4, respectively.Atthe beginning, both embryosare ata similar developmental stage: the cortex isruffling, the male pronucleusisstill small, andthe centrosomesare aboutto separate.Note thatthe nuclear envelope inthe air-1(RNAi) embryo breaksdown2 minlater thaninwild-type.However, cortical contractionsinitiate simultaneously inboth embryos.