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General Information
D. melanogaster
Deficiency (2L) Ted Wright
FlyBase ID
Feature type
Computed Breakpoints include


Deleted Segment
Sequence coordinates
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Class of aberration (relative to wild type)
Class of aberration (relative to progenitor)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

CadN << bk1 << btv << amos << bk2 << hk

Genetic mapping information
Comments on Cytology

Left limit of break 1 from polytene analysis (FBrf0076124) Right limit of break 1 from inclusion of kel (FBrf0044468) Limits of break 2 from polytene analysis (FBrf0076124)

Sequence Crossreferences
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Phenotypic Data
In combination with other aberrations

Df(2L)TW119/Df(2L)TW201 flies show male sterility, deafness and reduced ocelli. Mature sperm are formed in the males, but are amotile. The two cyst cells surrounding the mature 64-unit sperm bundle fail to be degraded and the spermatids that constitute the bundle are not individualised.

Most Df(2L)TW3/Df(2L)TW201 embryos have homeotic defects in the abdomen, often showing partial transformation of the first abdominal segment to the second abdominal segment. Segment polarity defects and a reduced cephalopharyngeal skeleton are also often seen. Df(2L)TW3/Df(2L)TW201 ; Scm1/+ embryos have severe head defects including almost complete loss of the cephalopharyngeal skeleton, show partial transformation of the 1st abdominal segment to a more posterior segment, and show transformation of the 6th and 7th abdominal segments towards the 8th abdominal segment.

NOT in combination with other aberrations
Stocks (2)
Notes on Origin
Balancer / Genotype Variants of the Aberration
Separable Components
Other Comments
Synonyms and Secondary IDs (4)
Reported As
Name Synonyms
Deficiency (2L) Ted Wright
Secondary FlyBase IDs
    References (15)