FB2024_03 , released June 25, 2024
Allele: Dmel\bol1
Open Close
General Information
Symbol
Dmel\bol1
Species
D. melanogaster
Name
FlyBase ID
FBal0027980
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
P{PZ}bol1
Key Links
Genomic Maps

Allele class
Nature of the Allele
Allele class
Progenitor genotype
Associated Insertion(s)
Cytology
Description

The P{PZ} in bol1 falls within the first intron of bol.

Allele components
Component
Use(s)
Inserted element
Encoded product / tool
Mutations Mapped to the Genome
Associated Sequence Data
DNA sequence
Protein sequence
 
Expression Data
Reporter Expression
Additional Information
Statement
Reference
 
Marker for
Reflects expression of
Reporter construct used in assay
Human Disease Associations
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 0 )
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 0 )
Disease
Interaction
References
Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

Meiotic entry is blocked, meiotic spindles do not form.

The testes of homozygous males contain only premeiotic germ cell stages.

In homozygotes, spermatocytes form but fail to undergo meiotic divisions. 64-cell spermatid cysts are absent. BrdU labeling shows that mitotic and premeiotic S phases occur as in wild-type, and meiotic prophase is normal. Subsequent stages of meiosis are aberrant. Chromosomes remain at the nuclear periphery, and centrosome separation occurs but the centrosomes do not reach the poles and do not nucleate asters. The nuclear lamina fails to break down. Spermiogenesis continues to a limited extent. Mitochondria begin to form nebenkern in tetraploid spermatids. Hemizygous males show minor but reproducible defects in spermatogenesis.

Some 16-cell cysts resemble those of pelo, with no meiosis and abnormally large Nebenkern in late spermatocytes; others contain multiple nuclei as well as large Nebenkern.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Suppressed by
Statement
Reference
Phenotype Manifest In
Suppressed by
Statement
Reference

bol1 has spindle | male phenotype, suppressible by tweβTub85D.PM

Additional Comments
Genetic Interactions
Statement
Reference
Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (2)
Notes on Origin
Discoverer

A. Spradling.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (6)
References (21)