FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term lethal - all die before end of first instar larval stage ID (Ontology) FBcv:0002001 (FlyBase CV)
Definition A phenotype of a population that is the death of all animals in that population at some stage or stages before the end of the first instar larval stage.
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Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPIC_CLASS     283
Insertions (FBti)  LETHALITY      74
Constructs (FBtp)  PHENOTYPIC_CLASS      70
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Insertions Constructs
 lethal - all die before end of first instar larval stage (all annotations which use CV term, excluding "NOT" statements)     283     74     70
     lethal - all die before end of first instar larval stage | abnormal dorsal/ventral axis specification | maternal effect | recessive       2       --       --
     lethal - all die before end of first instar larval stage | female       1      1       --
     lethal - all die before end of first instar larval stage | germline clone       1      1       --
     lethal - all die before end of first instar larval stage | heat sensitive       2       --       2
     lethal - all die before end of first instar larval stage | male       3      3       --
     lethal - all die before end of first instar larval stage | male limited | recessive       1      1       --
     lethal - all die before end of first instar larval stage | male | recessive       1      1       --
     lethal - all die before end of first instar larval stage | maternal effect       1       --       1
     lethal - all die before end of first instar larval stage | recessive      63     18       --
     lethal - all die before end of first instar larval stage | recessive | chemical conditional       1       --       --
     lethal - all die before end of first instar larval stage | rescuable maternal effect       3       --       --
     lethal - all die before end of first instar larval stage | temperature conditional       3       --       4
Spanning Tree (Parents/Children)
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  lethal - all die before end of larval stage
   |__lethal - all die before end of second instar larval stage
       |__lethal - all die before end of first instar larval stage  6406 rec.
           |__lethal - all die during embryonic stage 5982 rec.
           |__lethal - all die during first instar larval stage 81 rec.
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Is a lethal - all die before end of second instar larval stage
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