Analysis of a new homoeotic mutation (iab-2) within the bithorax complex in Drosophila melanogaster

1981 ◽  
Vol 181 (1) ◽  
pp. 82-86 ◽  
Author(s):  
David T. Kuhn ◽  
Daniel F. Woods ◽  
Julie L. Cook
Keyword(s):  
Drosophila Melanogaster ◽  
Bithorax Complex

The origin of pattern duplications in segment polarity mutants of Drosophila melanogaster

Development ◽  
1985 ◽  
Vol 87 (1) ◽  
pp. 129-135
Author(s):  
Alfonso Martinez-Arias ◽  
Philip W. Ingham
Keyword(s):  
Drosophila Melanogaster ◽  
Bithorax Complex ◽  
Anterior Compartment ◽  
Larval Cuticle ◽  
Segment Polarity ◽  
Reversed Polarity ◽  
Segmental Identity

Mutations of the segment polarity group in Drosophila melanogaster produce additional denticles with reversed polarity in every segment of the larval cuticle. We have investigated the effect of mutations in different elements of the bithorax complex on the segmental identity of these additional pattern elements. Our results suggest that they are derived, primarily, from the anterior compartment of each segment.

The pattern of campaniform sensilla on the wing and haltere of Drosophila melanogaster and several of its homeotic mutants

Development ◽  
1982 ◽  
Vol 71 (1) ◽  
pp. 41-61
Author(s):  
Eric S. Cole ◽  
John Palka
Keyword(s):  
Drosophila Melanogaster ◽  
Campaniform Sensilla ◽  
Bithorax Complex ◽  
Homeotic Transformation ◽  
Anterior Compartment

A detailed mapping and description of campaniform sensilla on the wing and haltere of Drosophila melanogaster is provided. Six types of sensilla are distinguished. Similarities in the pattern of their distribution on the dorsal and ventral surfaces of each appendage, as well as between the wing and haltere, are apparent. These data are used to assess the quality of homeotic transformation in several mutants of the bithorax complex in which the halteres are transformed into wings. Flies homozygous for abxbx3pbx produce a complete inventory of wing sensilla on the homeotic appendage. In abx, bx3 and bx3pbx homozygotes the transformation of haltere into wing is incomplete, and each mutant shows characteristic fields of haltere and wing sensilla. It appears that specific regions of the anterior haltere compartment require different combinations of mutant alleles to produce a distinct homeotic transformation. Furthermore, the pbx mutation appears to influence expression of the bx3 mutation within the anterior compartment.

Molecular Genetics of the Bithorax Complex in Drosophila melanogaster

Science ◽  
1983 ◽  
Vol 221 (4605) ◽  
pp. 23-29 ◽  
Author(s):  
W. Bender ◽  
M. Akam ◽  
F. Karch ◽  
P. A. Beachy ◽  
M. Peifer ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Molecular Genetics ◽  
Bithorax Complex

scholarly journals The ash-1, ash-2 and trithorax genes of Drosophila melanogaster are functionally related.

Genetics ◽  
1989 ◽  
Vol 121 (3) ◽  
pp. 517-525 ◽  
Author(s):  
A Shearn
Keyword(s):  
Drosophila Melanogaster ◽  
Null Allele ◽  
Homeotic Gene ◽  
Bithorax Complex ◽  
Substantial Evidence ◽  
Genetic Tests ◽  
Recessive Lethal ◽  
The Third ◽  
Sex Combs

Abstract Mutations in the ash-1 and ash-2 genes of Drosophila melanogaster cause a wide variety of homeotic transformations that are similar to the transformations caused by mutations in the trithorax gene. Based on this similar variety of transformations, it was hypothesized that these genes are members of a functionally related set. Three genetic tests were employed here to evaluate that hypothesis. The first test was to examine interactions of ash-1, ash-2 and trithorax mutations with each other. Double and triple heterozygotes of recessive lethal alleles express characteristic homeotic transformations. For example, double heterozygotes of a null allele of ash-1 and a deletion of trithorax have partial transformations of their first and third legs to second legs and of their halteres to wings. The penetrance of these transformations is reduced by a duplication of the bithorax complex. The second test was to examine interactions with a mutation in the female sterile (1) homeotic gene. The penetrance of the homeotic phenotype in progeny from mutant mothers is increased by heterozygosis for alleles of ash-1 or ash-2 as well as for trithorax alleles. The third test was to examine the interaction with a mutation of the Polycomb gene. The extra sex combs phenotype caused by heterozygosis for a deletion of Polycomb is suppressed by heterozygosis for ash-1, ash-2 or trithorax alleles. The fact that mutations in each of the three genes gave rise to similar results in all three tests represents substantial evidence that ash-1, ash-2 and trithorax are members of a functionally related set of genes.

scholarly journals The Bithorax Complex of Drosophila melanogaster: Underreplication and morphology in polytene chromosomes

2001 ◽  
Vol 98 (2) ◽  
pp. 570-574 ◽  
Author(s):  
Y. M. Moshkin ◽  
A. A. Alekseyenko ◽  
V. F. Semeshin ◽  
A. Spierer ◽  
P. Spierer ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Polytene Chromosomes ◽  
Bithorax Complex

Chargaff difference analysis of the bithorax complex of Drosophila melanogaster

1998 ◽  
Vol 76 (1) ◽  
pp. 129-137 ◽  
Author(s):  
Kha D. Dang ◽  
Previn B. Dutt ◽  
Donald R. Forsdyke
Keyword(s):  
Drosophila Melanogaster ◽  
Bithorax Complex ◽  
Difference Analysis
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