FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term chromosome ID (Ontology) SO:0000340 (Sequence Ontology)
Definition Structural unit composed of a nucleic acid molecule which controls its own replication through the interaction of specific proteins at one or more origins of replication.
Comment
Links to External Ontologies
SO.org
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)  PHENOTYPE_MANIFEST_IN      42
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       9
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 Genes Constructs
 chromosome (all annotations which use CV term, excluding "NOT" statements)      42      5     10
     chromosome | adult stage | female      22       --      21
     chromosome | cleavage stage | maternal effect       3       --       1
     chromosome | embryonic stage      10       --       2
     chromosome | embryonic stage 4 | germline clone       1       --       --
     chromosome | embryonic stage 4 | germline clone | maternal effect       1       --       --
     chromosome | embryonic stage | maternal effect      14       --       4
     chromosome | embryonic stage | paternal effect       4       --       1
     chromosome | germline clone | maternal effect | pre-blastoderm stage       1       --       --
     chromosome | larval stage      47       --      14
     chromosome | larval stage | increased number       1       --       --
     chromosome | oogenesis       7       --       5
     chromosome | oogenesis stage S14       1       --       --
     chromosome | oogenesis | progressive       2       --       --
     chromosome | pre-blastoderm stage       1       --       --
     chromosome | spermatogenesis       7       --       5
     chromosome | spermatogenesis | third instar larval stage       1       --       --
     chromosome | third instar larval stage      35       --      14
     chromosome | third instar larval stage | conditional       1       --       --
Spanning Tree (Parents/Children)
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  biological_region
   |__replicon
       |__chromosome  330 rec.
           |__apicoplast_chromosome
           |__chloroplast_chromosome
           |__chromoplast_chromosome
           |__chromosome_breakpoint
           |   |__deletion_breakpoint
           |   |__fragile_site(+)
           |   |__insertion_breakpoint
           |   |__interchromosomal_breakpoint
           |   |__intrachromosomal_breakpoint
           |   |__inversion_breakpoint
           |   |__translocation_breakpoint
           |__chromosome_part 273 rec.
           |   |__chromatin_regulatory_region
           |   |__chromosomal_regulatory_element(+)
           |   |__chromosomal_structural_element(+)
           |   |__chromosome_arm
           |   |__chromosome_band
           |   |__Crick_strand
           |   |__DNA_loop(+)
           |   |__interband
           |   |__introgressed_chromosome_region 273 rec.
           |   |__Watson_strand
           |__cyanelle_chromosome
           |__DNA_chromosome
           |   |__double_stranded_DNA_chromosome(+)
           |   |__single_stranded_DNA_chromosome(+)
           |__leucoplast_chromosome
           |__macronuclear_chromosome
           |__micronuclear_chromosome
           |__mitochondrial_chromosome
           |__nuclear_chromosome
           |__nucleomorphic_chromosome
           |__RNA_chromosome
               |__double_stranded_RNA_chromosome(+)
               |__single_stranded_RNA_chromosome(+)
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http://en.wikipedia.org/wiki/Chromosome "wiki"