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:0000031
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slow growth
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Any variation that causes a reduction in growth rate compared to control. |
WBPhenotype:0000059
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larval arrest
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The developmental program of the animals halts at any larval stage and thus fails to reach adulthood. In C.elegans, this occurs anytime during L1-L4 stage. |
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:0001177
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embryo osmotic pressure sensitive early emb
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Embryos rupture when placed on a 2% agar pad and covered with a coverslip. |
WBPhenotype:0001139
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nuclear envelope assembly variant early emb
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Nuclear envelope does not reassemble properly. |
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:0000040
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one cell arrest early emb
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Embryos fail to divide and arrest as one-cell embryos. |
WBPhenotype:0001119
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cell cycle slow early emb
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Embryos take longer to divide during the first and second cell divisions. |
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:0000689
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maternal sterile
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Animals produce no or very few embryos as a result of experimental treatment. This is in contrast to sterility due to genetic perturbations (maternal effect sterility). |
WBPhenotype:0001123
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synchronous second division early emb
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AB and P1 divide synchronously. |
WBPhenotype:0001153
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pronuclear migration failure early emb
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Neither of the pronuclei migrate and they never meet. |
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. |