FB2024_03 , released June 25, 2024
Allele: Dmel\mod(mdg4)Z3-3401
Open Close
General Information
Symbol
Dmel\mod(mdg4)Z3-3401
Species
D. melanogaster
Name
FlyBase ID
FBal0212797
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Nature of the Allele
Progenitor genotype
Cytology
Description

Amino acid replacement: R224C.

Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Variant Molecular Consequences
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

Homozygous males show a high frequency of X-Y chromosome nondisjunction in meiosis (31.2%).

Homozygous, mod(mdg4)Z3-3401/Df(3R)GC14 and mod(mdg4)Z3-3401/mod(mdg4)T16 males show a low frequency of 4th chromosome loss in meiosis (3.3%, 5.2% and 7.9% respectively).

mod(mdg4)Z3-3401/Df(3R)GC14 males show a moderate frequency of chromosome 2 nondisjunction in meiosis (16.9%).

Defects are seen in meiosis I in homozygous spermatocytes; although the chromosomes condense normally, the homologs are frequently unpaired at prometaphase I and metaphase I. Anaphase I is disorganised, with chromosomes migrating to the poles asynchronously. 54% of meiosis I poles have nuclei of unequal sizes, indicative of meiosis I nondisjunction. Meiosis II chromosome morphology and segregation appear normal. Spindle structure and kinetochore function appear normal at both divisions.

Homologous pairing in pre-meiotic spermatogonia and in early prophase I spermatocytes appears normal in mod(mdg4)Z3-3401/mod(mdg4)T16 males.

mod(mdg4)Z3-3401/Df(3R)GC14 females do not show increased X chromosome nondisjunction compared to controls and the frequency of recombination in large intervals on the X, second and third chromosomes in the mutant females is normal.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhancer of
Statement
Reference
Phenotype Manifest In
Other
Additional Comments
Genetic Interactions
Statement
Reference

Body colour: y2 ; mod(mdg4)Z3-3401/mod(mdg4)T16 flies have a y- phenotype (yellow bristles, wings and bodies).

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments

mod(mdg4)Z3-3401 fully complements the lethal/semi-lethal phenotypes of the following mod(mdg4) alleles, but they fail to complement mod(mdg4)Z3-3401 with respect to X-Y chromosome nondisjunction in male meiosis, with the transheterozygotes showing a high level of X-Y nondisjunction (frequency is indicated in parentheses after each allele); mod(mdg4)T16 (39.6%), mod(mdg4)142Δ10 (49.3%), mod(mdg4)142Δ33 (49.1%), mod(mdg4)142Δ15 (42.1%), mod(mdg4)142Δ32 (28.3%), mod(mdg4)142Δ29 (46%), mod(mdg4)142Δ49 (54.9%), mod(mdg4)neo129 (41.2%), mod(mdg4)02 (32.1%), mod(mdg4)03 (34.9%), mod(mdg4)20 (45.8%), mod(mdg4)117 (47.2%), mod(mdg4)269 (49.5%), mod(mdg4)324 (44.4%) and mod(mdg4)340 (54.1%).

mod(mdg4)Z3-3401 fully complements the lethal/semi-lethal phenotypes of the following mod(mdg4) alleles, and they partially or fully complement mod(mdg4)Z3-3401 with respect to X-Y chromosome nondisjunction in male meiosis, with the transheterozygotes showing only a low level of X-Y nondisjunction (frequency is indicated in parentheses after each allele); mod(mdg4)eGp4 (2.94%) and mod(mdg4)B2 (0%).

mod(mdg4)T6 fully complements mod(mdg4)Z3-3401 with respect to X-Y chromosome nondisjunction in male meiosis.

mod(mdg4)Z3-3401 strongly (but not completely) complements mod(mdg4)Z3-5578 and mod(mdg4)Z3-3298; transheterozygotes show only a low level of X-Y nondisjunction in male meiosis (frequency is indicated in parentheses after each allele); frequency is mod(mdg4)Z3-5578 (1.42%) and mod(mdg4)Z3-3298 (1.09%).

Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Symbol Synonym
mod(mdg4)Z3-3401
Name Synonyms
Secondary FlyBase IDs
    References (1)