THE BLOB MUTANT OF TRIBOLIUM CASTANEUM

1971 ◽  
Vol 13 (4) ◽  
pp. 801-810 ◽  
Author(s):  
Peter S. Dawson
Keyword(s):  
Linkage Group ◽  
Linkage Map ◽  
Tribolium Castaneum ◽  
X Chromosome ◽  
Dosage Compensation ◽  
Incomplete Penetrance ◽  
Far Right ◽  
Flour Beetle ◽  
Variable Expressivity ◽  
Linkage Relationships

A new sex-linked mutation in the flour beetle Tribolium castaneum is described and illustrated. Blob (bb), an antennal mutant, is located near the far right end of the known linkage map of the X chromosome. It is recessive, with incomplete penetrance and variable expressivity, and fails to exhibit dosage compensation. The expression of bb is discussed in relationship to models of antennal development in this species. Apparent rediscovery of the pegleg mutation has confirmed a previous report on the linkage relationships of pearl and pegleg in linkage group II.

scholarly journals NEW MUTATIONS AND A 7-CHROMOSOME LINKAGE MAP OF SCHIZOPHYLLUM COMMUNE

Genetics ◽  
1977 ◽  
Vol 85 (3) ◽  
pp. 417-425
Author(s):  
Carl Frankel ◽  
Albert H Ellingboe
Keyword(s):  
Linkage Group ◽  
Linkage Map ◽  
Group Analysis ◽  
Schizophyllum Commune ◽  
Somatic Recombination ◽  
Linkage Relationships ◽  
New Mutations

ABSTRACT Forty-eight useful new mutations of S. commune were obtained by mutagenesis with N-methyl-N'-nitro-N-nitrosoguanidine. Their requirements and meiotic linkage relationships to each other and previously mapped areas were investigated. Several of these new mutations were incorporated into diploid strains so that the diploids contained at least one marker on every linkage group. Analysis of somatic recombination in these diploids indicated that each meiotic linkage group corresponded to an independent chromosome.

The "reindeer" mutation and a revision of linkage groups V and X in the flour beetle, Tribolium castaneum

1984 ◽  
Vol 26 (6) ◽  
pp. 762-764 ◽  
Author(s):  
Peter S. Dawson
Keyword(s):  
Linkage Group ◽  
Key Words ◽  
Tribolium Castaneum ◽  
Linkage Groups ◽  
Dominant Mutation ◽  
Genetic Studies ◽  
Group V ◽  
Flour Beetle ◽  
Dominant Mutants

Reindeer (Rd) is a dominant mutation affecting antenna morphology in the tenebrionid flour beetle, Tribolium castaneum. In contrast with most dominant mutants previously described for this species, homozygotes are fully viable, thus making Rd very useful for genetic studies. Rd is tentatively assigned to either linkage group IX or X. Abbreviated appendages (aa), formerly placed in linkage group X, is reassigned to linkage group V on the basis of demonstrated linkage to jet (j).Key words: Tribolium, mutation Rd, linkage, antenna morphology.

SEX LINKAGE OF THE GLUCOSE 6-PHOSPHATE DEHYDROGENASE LOCUS IN THE FLOUR BEETLE TRIBOLIUM CASTANEUM

1982 ◽  
Vol 24 (3) ◽  
pp. 267-271 ◽  
Author(s):  
Peter S. Dawson ◽  
Nancy M. Hollingsworth
Keyword(s):  
Tribolium Castaneum ◽  
X Chromosome ◽  
Sex Linkage ◽  
Flour Beetle ◽  
Glucose 6 Phosphate Dehydrogenase

A locus involved in determination of glucose 6-phosphate dehydrogenase (G6PDH) phenotypes in Tribolium castaneum Herbst has been mapped on the X chromosome. Data from a three-point linkage experiment yielded estimated map distances of 10.2 ± 1.4 for red-pygmy and 19.2 ± 1.8 for pygmy-G6PDH, placing G6PDH between the pokey and blob loci. Tribolium castaneum joins mammals and possibly Drosophila as animals with sex-linked G6PDH. It seems difficult to attribute this to chance.

Linkage of the reindeer and alate prothorax loci and sex differences in recombination frequency in linkage group IX of Tribolium castaneum

1985 ◽  
Vol 27 (3) ◽  
pp. 276-278
Author(s):  
Peter S. Dawson ◽  
Kelly L. Berends
Keyword(s):  
Sex Differences ◽  
Linkage Group ◽  
Tribolium Castaneum ◽  
Autosomal Dominant ◽  
Recombination Frequency ◽  
Flour Beetle ◽  
The Third ◽  
Dominant Mutant

Reindeer (Rd), an autosomal dominant mutant in the flour beetle, Tribolium castaneum, is located in linkage group IX. Recombination between Rd and alate prothorax occurs more frequently in males than in females. Linkage group IX appears to be the third linkage group for which recombination frequency is greater in males for one region and in females for another region of the chromosome.Key words: Tribolium, linkage.

scholarly journals The location of Cattanach's translocation in the X-chromosome linkage map of the mouse

1966 ◽  
Vol 8 (2) ◽  
pp. 253-256 ◽  
Author(s):  
B. M. Cattanach
Keyword(s):  
Linkage Group ◽  
Linkage Map ◽  
X Chromosome ◽  
Present Communication ◽  
Group I ◽  
Autosome Translocation

In Cattanach's X-autosome translocation a piece of autosome of linkage group I has been inserted into the X-chromosome and a piece of X may have been reciprocally translocated to the autosome (Cattanach, 1961; Ohno & Cattanach, 1962). The present communication reports investigations to locate the autosomal insertion in the X-chromosome linkage map and provide evidence pertinent to the question of the possible reciprocal nature of the rearrangement; a brief summary of the results has already been reported (Cattanach & Isaacson, 1965).

Linkage studies in Tribolium castaneum (Herbst). XII. A revision of linkage group II

Genome ◽  
1987 ◽  
Vol 29 (1) ◽  
pp. 26-33 ◽  
Author(s):  
Alexander Sokoloff ◽  
Robert F. Ferrone ◽  
John D. Chaney ◽  
Jerry Braden ◽  
Ricardo J. Muñoz
Keyword(s):  
Linkage Group ◽  
Gamma Irradiation ◽  
Tribolium Castaneum ◽  
Gene Clusters ◽  
Linkage Studies ◽  
Eye Color ◽  
Y Chromosomes ◽  
Group Ii ◽  
Linkage Relationships ◽  
Number Of Segments

Data are presented to show the linkage relationships of a number of genes in linkage group II of Tribolium castaneum and a revised map of this linkage group is presented bearing eight well-established points. Some of these points were establishable with the aid of an accidental inversion induced by gamma irradiation. Five additional mutants are also in this linkage group as a result of the revision, but their relative position needs to be established through additional linkage studies. The linkage map suggests the presence of two gene clusters, one affecting the eye color and morphology and the other including homeotic mutants that affect the morphology of the maxillary and labial palps, the thorax, and the abdominal sternites. Data are presented to show that the frequency of recombination for a number of segments in linkage group II is not equal in the two sexes. The literature bearing on the evolution of the karyotype in Tribolium is reviewed, and it is concluded, on the basis of the present evidence, that it is linkage group II and not linkage group IX that became translocated to the X and Y chromosome in a T. castaneum like ancestor to produce the much larger neo-X and neo-Y chromosomes of T. confusum. Key words: Tribolium, linkage, gamma irradiation.

LINKAGE GROUP IV OF TRIBOLIUM CASTANEUM

1972 ◽  
Vol 14 (3) ◽  
pp. 675-680 ◽  
Author(s):  
Peter S. Dawson
Keyword(s):  
Linkage Group ◽  
Tribolium Castaneum ◽  
Group Iv ◽  
Eye Color ◽  
Flour Beetle ◽  
Color Mutant ◽  
White Locus ◽  
Fourth Pair

A new recessive eye color mutant, hazel, of the flour beetle, Tribolium castaneum, has been mapped in linkage group IV near the white locus, thus establishing the existence of a fourth pair of closely linked eye color genes in this species. A revision of linkage group IV is proposed.

Genetics of Glossina morsitans morsitans (Diptera: Glossinidae). XIV. Map locations of the loci for phosphoglucomutase and glucose-6-phosphate isomerase

Genome ◽  
1992 ◽  
Vol 35 (4) ◽  
pp. 699-701 ◽  
Author(s):  
R. H. Gooding ◽  
B. M. Rolseth
Keyword(s):  
Linkage Group ◽  
Linkage Map ◽  
Malate Dehydrogenase ◽  
X Chromosome ◽  
Glossina Morsitans Morsitans ◽  
Glossina Morsitans ◽  
Group Iii ◽  
Intrachromosomal Recombination ◽  
Group I

The locus for phosphoglucomutase (Pgm) was mapped at less than 1.2 recombination units from the locus for arginine phophokinase (Apk) in linkage group I, the X chromosome. Linkage group III loci were mapped in the order sabr (long scutellar apical bristles in females), Mdh (malate dehydrogenase), and Pgi (glucose-6-phosphate isomerase). The loci sabr and Mdh were separated by 39.3 ± 4.6 recombination units, and Mdh and Pgi were separated by 45.5 ± 4.7 recombination units. Intrachromosomal recombination was rare or did not occur in males. Previously published recombination distances are summarized as a linkage map for the 16 loci that have been mapped in Glossina morsitans morsitans.Key words: tsetse, linkage map, phosphoglucomutase, glucose-6-phosphate isomerase.

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