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:0001168
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pseudocleavage absent early emb
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No pseudocleavage is observed before or during pronuclear migration. |
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:0001037
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sterile progeny
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Any variation that compromises the reproductive ability of the progeny of an animal. |
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:0001155
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pronuclei meet centrally early emb
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The maternal and paternal pronuclei meet more centrally instead of meeting in the posterior end of the embryo. |
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: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:0001083
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multiple cytoplasmic cavities early emb
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Multiple vesicles, vacuoles, or cavities are seen during early embryogenesis. |
WBPhenotype:0001124
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ABa ABp EMS synchronous division early emb
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EMS divides at the same time that ABa and ABp divide. |
WBPhenotype:0001125
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P2 EMS synchronous division early emb
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P2 and EMS divide synchronously. |
WBPhenotype:0001127
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EMS anterior extension fails early emb
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The EMS blastomere fails to extend anteriorly and make extensive contact (hug) with the ABa blastomere. |
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. |