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General Information
Symbol
In(1)sc4
Species
D. melanogaster
Name
Inversion (1) scute
FlyBase ID
FBab0004187
Feature type
Also Known As
sc4
Computed Breakpoints include

1B3;h26-h28

Sequence coordinates
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Mutagen
Class of aberration (relative to wild type)
Class of aberration (relative to progenitor)
Breakpoints

1B3-1B4;19F-20C1

1B3-1B4;h26-h28

Carries alleles
Transposon Insertions
Formalized genetic data

Zhr << bk1 << l(1)sc << bk2 hits ABO-X

Genetic mapping information
Comments

Left breakpoint between DNA coordinates +24.0 and +25.8 (Campuzano et al., 1985). 0 is an arbitrarily chosen EcoRI site in the scĪ² segment of ASC; positive values to the left (Carramolino, Ruiz-Gomez, Guererro, Campuzano and Modolell, 1982, EMBO J. 1: 1185-92).

Comments on Cytology

The proximal breakpoint is in or near the ABO-X heterochromatic region that maternally interacts with the abo gene product.

Left limit of break 1 from polytene analysis (FBrf0042024) Right limit of break 1 from complementation mapping against l(1)sc (FBrf0047940) Left limit of break 2 from complementation mapping against ABO-X (FBrf0042645) Right limit of break 2 from polytene analysis (FBrf0105072)

Sequence Crossreferences
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Complementation Data
Completely deleted / disrupted
Partially deleted / disrupted
Molecular Data
Completely deleted
Partially deleted
Genes NOT Deleted / Disrupted
Complementation Data
Molecular Data
 
Genes Duplicated
Complementation Data
Completely duplicated
Partially duplicated
Molecular Data
Completely duplicated
Partially duplicated
Genes NOT Duplicated
Complementation Data
 
Molecular Data
 
Phenotypic Data
In combination with other aberrations
NOT in combination with other aberrations

In(1)sc4 causes a loss of all scutellar bristles.

Homozygous females show a loss of tergite chaetae.

Maternal and zygotic interactions between abo and In(1)sc4 (Malva, Labella, Manzi, Salzano, Lavorgna, De Ponti and Graziani, 1985, Genetics 111: 487-94). In(1)sc4/+ female produces about 6% exceptional males from 4-strand double exchange. Secondary exceptions about 4%.

Stocks (2)
Notes on Origin
Discoverer

Agol, 1928.

 

on a y chromosome

Balancer / Genotype Variants of the Aberration
Separable Components
 
Other Comments
 
Synonyms and Secondary IDs (4)
Reported As
Name Synonyms
Inversion (1) scute
Secondary FlyBase IDs
    References (37)