|Feature type||allele||Associated gene||Dmel\bi|
|Also Known As||omb3198, l(1)omb3198|
|Map ( GBrowse )|
|Allele class||loss of function allele|
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|Nature of the Allele|
|Mutations Mapped to the Genome|
|Associated Sequence Data|
|Nature of the lesion|
Point mutation causing premature termination of the protein.
Nucleotide substitution: G?A. Amino acid replacement: W395. Lethal mutation is located within exon 4 around position -46, 336bp from the lethal mutation of biD4@.
|Phenotype Manifest In|
abdominal tergite | posterior & trichome
adult cuticle & abdomen | somatic clone | cell autonomous
biomb-3198 clones generated along the A/P boundary of the wing imaginal disc, using the FLP/FRT technique, show a defective segregation phenotype. biomb-3198 clones of A, but not P, origin are partly misplaced into the territory of the adjacent compartment, causing a displacement of the A/P compartment boundary toward P.
Mutants die as pharate adults. A deletion of the central wing disc is seen, also huge overgrowths are seen that do not evaginate, but remain internal.
Clones of biomb-3198 that are induced in the dorsal half of the eye do not remove the dorsal rim ommatidia.
When somatic clones are made in the segmental anterior 4 (a4) region of the anterior segmental compartment in the adult abdomen an associated patch of reversed polarity is seen, which can extend in front of and behind the clone. The clone itself also lacks the dark a4 pigment. When the clone is near the back of the anterior compartment hairs (and thus polarity) are reversed. This reversed polarity effect only extends as far as the anterior posterior boundary. When somatic clones are made in the segmental posterior 3 (p3) region of the posterior segmental compartment in the adult abdomen, about one third of the clones lost some, but not all of the hairs within the clone.
Hemizygotes usually die at the late larval or early pupal stage, with a few animals surviving to the late pharate adult stage. Homozygous clones in the abdomen have no effect on polarity or cell fates when located in the anterior tergite. Clones in the posterior tergite and posterior hairy zone cause reversal of trichome polarity and disappearance of the pigment band. Clones in the posterior tergite are small, even if induced at early embryonic stages.
Neuroanatomical omb phenotype.
|NOT Suppressor of|
|Phenotype Manifest In|
biomb-3198 has wing disc | anterior/posterior compartment boundary | somatic clone phenotype, suppressible by ciScer\UAS.cDa/Scer\GAL4hh-Gal4
|NOT suppressed by|
Clones generated along the A/P boundary of the wing imaginal disc, that overexpress ciScer\UAS.cDa, driven by Scer\GAL4hh-Gal4, in a biomb-3198 background show no mis-segregation phenotype.
When biomb-3198 ptc16 double homozygous clones are made in the anterior compartment of the abdominal segment. These clones makes segmental region anterior 6 (a6) cuticle, like ptc16 clones, but reverse polarity in the front half of the clone as do biomb-3198 clones.
|Complementation & Rescue Data|
|Stocks ( 0 )|
|Notes on Origin|
|External Crossreferences & Linkouts|
|Synonyms & Secondary IDs ( 7 )|
|Secondary FlyBase IDs|
|References ( 14 )|