WBPhenotype:0000050
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embryonic lethal
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Animals die during embryonic development. In C. elegans, often assayed as refractile eggs that fail to hatch; when applied to large-scale RNAi screens in C. elegans, more than 10% of embryos die. |
WBPhenotype:0001105
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P0 spindle position abnormal
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Altered P0 spindle placement causes either a symmetric first division, a division in which P1 is larger than AB, or a division in which the asymmetry is exaggerated such that AB is much larger than normal. |
WBPhenotype:0001163
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pronucleus formation failure early emb
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Either the maternal or paternal pronucleus is absent. |
WBPhenotype:0001143
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multiple nuclei early emb
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Embryos contain more than one nucleus per cell in the inviable one- to four-cell embryo. |
WBPhenotype:0001080
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excessive blebbing early emb
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Excessive shaking and movements are seen in the cell membrane or cytoplasm of one-cell or two-cell embryos. |
WBPhenotype:0001161
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maternal pronucleus indistinct early emb
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Maternal pronucleus has a blurry appearance. The nuclear envelope does not have a crisp circular shape. |
WBPhenotype:0001154
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paternal pronucleus migrates early emb
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Instead of the maternal pronucleus migrating to the posterior end of the one-cell embryo, the paternal pronucleus migrates to meet the maternal pronucleus in the anterior end. |
WBPhenotype:0001147
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polar body defective early emb
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Polar bodies are abnormal in the inviable one- to four-cell embryo. |
WBPhenotype:0001131
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loose mitotic furrow early emb
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Once formed, the mitotic furrow can "slide"laterally. |