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 second instar larval stage ID (Ontology) FBcv:0002003 (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 second instar larval stage.
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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     263
Insertions (FBti)  LETHALITY      65
Constructs (FBtp)  PHENOTYPIC_CLASS      61
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Insertions Constructs
 lethal - all die before end of second instar larval stage (all annotations which use CV term, excluding "NOT" statements)     263     65     61
     lethal - all die before end of second instar larval stage | heat sensitive       2       --       2
     lethal - all die before end of second instar larval stage | male limited       4       --       --
     lethal - all die before end of second instar larval stage | recessive      71     26       --
     lethal - all die before end of second instar larval stage | recessive | rescuable maternal effect       1       --       --
Spanning Tree (Parents/Children)
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  lethal - all die before end of prepupal stage
   |__lethal - all die before end of larval stage
       |__lethal - all die before end of second instar larval stage  6794 rec.
           |__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.
           |__lethal - all die during second instar larval stage 63 rec.
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