Polytene chromosomes normal.
Insertion of 297 element at around coordinate +173kb, in the middle of the first intron of the class B and class C transcripts, and greater than 25kb from the Delta88 insertion in the Abd-Biab9-tuh-3 chromosome, previously thought to be the cause of the mutant phenotype.
Mutation in the r element.
Delta88 element insertion at +200 kb.
Phenotypically similar to "Abd-BI127B".
Male and female abdominal segment are normal, genitalia and analia are missing.
Enhances penetrance of head defect phenotype when in trans with Abd-Biab9-tuh-3. Heterozygotes with Abd-Biab9-tuh-3 exhibit genital defects to a moderate degree. Adult homozygous males have 6 normal abdominal segments. Males and females lack genitalia. Abd-Biab9-tuh-3 females deficient for tuh1h produce offspring with head defects and normal genitalia, just like homozygotes for tuh1h.
Parasegment 14 is partially transformed to parasegment 13.
Male and female genitalia and analia are missing or abnormal in homozygotes. Parasegment 14 is partially transformed into parasegment 13, and there is a rudimentary setal belt in A9 in homozygous embryos. Also shows dominant gain-of-function phenotypes.
Abd-Biab9-tuh-3, tuh1h has visible | dominant phenotype
Abd-Biab9-tuh-3, tuh1h has neoplasia | dominant phenotype
Abd-Biab9-tuh-3, tuh1g has visible | recessive phenotype
Abd-Biab9-tuh-3, tuh1h has visible | semidominant phenotype
Abd-Biab9-tuh-3, tuh1h has visible | heat sensitive phenotype
Abd-Biab8-D16/Abd-Biab9-tuh-3, tuh1g has male genitalia phenotype
Abd-Biab9-tuh-3, tuh1h has embryonic head phenotype
Abd-Biab9-tuh-3, tuh1h has genitalia | ectopic phenotype
Abd-Biab9-tuh-3, tuh1g has genitalia phenotype
Abd-Biab9-tuh-3, tuh1h has head phenotype
Abd-Biab9-tuh-3, tuh1h has abdomen | ectopic phenotype
Abd-Biab9-tuh-3, tuh1h has adult head phenotype
Abd-Biab9-tuh-3, tuh1h has eye phenotype
Mutant phenotype responds to tuh1h maternal effect by producing head defects, with ectopic posterior abdominal and genital tissue. Mutant phenotype of Abd-Biab9-tuh-3/Abd-Biab8-D16 responds to tuh1g maternal effect by producing genital defects.
Abd-Biab9-tuh-3 acts as a recessive allele in combination with tuh1g, causing internal and external genitalia to be deleted. Abd-Biab9-tuh-3 acts as a semidominant allele in combination with tuh1h, causing growths of abdominal and/or genital tissue in the head.
tuh1h/tuh1h Abd-Biab7-SGA/Abd-Biab9-tuh-3 flies have a similar phenotype to Abd-Biab7-SGA heterozygotes.
Abd-Biab9-tuh-3 flies also homozygous for tuh1h show eye outgrowths and have a transformation of head structures to genitalia. This phenotype is temperature-sensitive, having increased penetrance at 25 rather than 18oC.
Complements iab-5 and iab-6 alleles.
C.M. Woolf.
"FBti0014081 == 297{}Abd-Biab9-tuh-3" was stated as revision.
m+ r- mutant.
m+ r- mutant. Of 21 Abd-B alleles tested, Abd-Biab9-tuh-3 and Abd-Biab9-tuh-3 were the only ones that required mothers to be homozygous for tuh1h for head defects to be expressed.
Abd-B m+ r- mutation.
"FBti0014081 == 297{}Abd-Biab9-tuh-3" was stated as revision. Recombinant analysis determined the 297 insertion to be responsible for the mutant phenotype, not the Delta88 insert previously described. The 297 molecular lesion in what was previously known as "Abd-BI127B" is identical to that in stocks traditionally thought of as Abd-Biab9-tuh-3.