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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:0000291
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no oocytes
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Hermaphrodites lack fully specialized female gametes that are competent for fertilization. |
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WBPhenotype:0001355
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gonad morphology variant
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Variations in the form or composition of a specialized tissue of the reproductive tract that produces the male or female gametes compared to control (Wormatlas). |
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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:0000690
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gonad migration variant
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Variations in the gross movement of the whole structure of the gonad along the body wall, behind the gonadal leader cell and away from the developing vulva compared to control (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:0001792
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nuclei small
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Nuclei of specific cells are smaller 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:0001946
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pachytene progression during oogenesis variant
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Developing oocytes show defects in their entry, progression through or exit from the pachytene stage compared to control animals. Pachytene is a cell cycle process comprising the steps by which a cell progresses through the third stage of prophase I in meiosis, in which crossing over occurs between a chromatid in one partner and another chromatid in the homologous chromosome. |
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WBPhenotype:0001944
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oocyte number decreased
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A decreased number of celullarized haploid female germ cells (oocytes) are present in the gonad 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:0001957
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gonad small
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A decrease in size of the specialized tissue of the reproductive tract that produces the male or female gametes compared to control (Wormatlas). |
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WBPhenotype:0001974
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germ cell compartment small
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Germ cell compartments are smaller than that of control animals. |
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WBPhenotype:0001979
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gonad vesiculated
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Animals contain small, fluid-filled, anucleate, spherical membrane-bound structures within the gonad. |
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WBPhenotype:0001954
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diplotene absent during oogenesis
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The diplotene stage is not observed in developing oocytes. 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: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:0001981
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germ cell compartment expansion absent
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The compartments of the germline do not increase in size. |
