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WBPhenotype:0000688
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sterile
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Animals generate defective gametes, are otherwise unable to reproduce or they generate progeny that are unable to reproduce. |
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WBPhenotype:0001260
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oocyte morphology variant
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Haploid female germ cells (oocytes) exhibit variations in their overall structure, appearance or contents compared to control. |
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WBPhenotype:0001951
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pachytene region organization variant
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Animals exhibit variations from control animals in the organization of the germ cell nuclei in the pachytene stage region of the gonad. In C. elegans the pachytene region begins just proximal to the germline's transition zone, where germ cells coordinately switch into the leptotene/zygotene stage from the premeiosis stage (WormAtlas). |
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WBPhenotype:0001980
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germ cell compartment expansion variant
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Animals exhibit variations in the increase in size of compartments of the germline. In the C. elegans germline, syncytial compartments enlarge just prior to and coincident with the loop region, eventually abscising, to become fully enclosed germ cells (oocytes). |
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WBPhenotype:0000184
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apoptosis fails to occur
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Cells do not undergo the form of programmed cell death characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), classically little or no ultrastructural modifications of cytoplasmic organelles, plasma membrane blebbing (but maintenance of its integrity until the final stages of the process) and engulfment by resident phagocytes. |
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WBPhenotype:0000182
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apoptosis reduced
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Any perturbation that causes a decrease in the frequency of cell death by apoptosis compared to control animals. |
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WBPhenotype:0001361
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chromosome condensation variant
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Any variation in the progressive compaction of dispersed interphase chromatin into threadlike chromosomes prior to mitotic or meiotic nuclear division, or during apoptosis, in eukaryotic cells compared to control. |
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WBPhenotype:0001945
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oocytes small
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The size of haploid female germ cells (oocytes) are significantly smaller compared to control. |
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WBPhenotype:0001940
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rachis morphology variant
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Any variation in the form, structure or composition of the nucleus-free core of germ line cytoplasm in the gonad compared to control animals. In the C. elegans germline, nuclei exiting mitosis and entering meiosis are arranged along the cortex of the germline, partially enclosed by cellular membrane, forming a nucleus-free core of germline cytoplasm, called the rachis. |
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WBPhenotype:0001947
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diplotene progression during oogenesis variant
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Developing oocytes show defects in their entry, progression through or exit from the diplotene stage compared to control animals. Diplotene is a cell cycle process comprising the steps by which a cell progresses through the fourth stage of prophase I in meiosis, in which the homologous chromosomes begin to separate and the synaptonemal complex dissolves. |
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WBPhenotype:0001971
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germ cell compartment anucleate
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Germ cell compartments do not contain a nucleus. |
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WBPhenotype:0001956
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oocytes lack nucleus
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Haploid female germ cells (oocytes) lack a nucleus. |
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WBPhenotype:0001941
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rachis narrow
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The nucleus-free core of germline cytoplasm in the gonad is not as wide as control animals. |
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WBPhenotype:0001942
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rachis absent
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The nucleus-free core of germline cytoplasm in the gonad is missing. |
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WBPhenotype:0001949
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diakinesis region organization variant
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Animals exhibit variations from control animals in the organization of the germ cell nuclei in the gonad that are in the diakinesis stage. In C. elegans the diakinesis region occurs in the proximal gonad arm and is preceded by the diplotene region. In the diakinesis region oocytes arrest until oocyte maturation occurs. |
