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:0001106
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spindle orientation variant AB or P1 early emb
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The orientation of the spindle is aberrant in either the AB or the P1 cell. |
WBPhenotype:0001165
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excess maternal pronucleus early emb
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One-cell embryos have two or more maternal pronuclei. |
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: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:0001130
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cytokinesis fails early emb
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Cells of the embryo attempt to divide but fail to form two daughter cells. |
WBPhenotype:0001123
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synchronous second division early emb
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AB and P1 divide synchronously. |
WBPhenotype:0001156
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pronuclear size defective early emb
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Maternal or paternal pronucleus is either too small or too large. |
WBPhenotype:0001141
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nucleus reforms cell division remnant early emb
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After division of either one-cell or two-cell embryos, the nuclei reappear next to the cell division remnant. |
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: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:0001126
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cell cell contacts abnormal in four cell embryo
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Aba, ABp, EMS, or P1 contacts fewer of its sister cells than in control embryos. |
WBPhenotype:0001113
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P1 aster defective early emb
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Early embryos exhibit defects in the array of microtubules emanating from a spindle pole that do not connect to kinetochores in the P1 cell. |