[PDF] Top 20 THE RELATION OF REPEATS TO POSITION EFFECT IN DROSOPHILA MELANOGASTER
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THE RELATION OF REPEATS TO POSITION EFFECT IN DROSOPHILA MELANOGASTER
... A salivary gland chromosome analysis showed the presence of a reciprocal translocation, having one of its breaks within the duplication, just to the left of the 21E1[r] ... See full document
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INFLUENCE OF TEMPERATURE ON THE EXPRESSION OF POSITION EFFECTS IN THE SCUTE-8 STOCK OF DROSOPHILA MELANOGASTER AND ITS RELATION TO HETEROCHROMATIZATION
... 14'C simultaneously with those raised a t the other temperatures. The 14°C cultures were raised on a different batch of medium, from parents derived from the same s[r] ... See full document
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Position effect variegation in Drosophila melanogaster: relationship between suppression effect and the amount of Y chromosome.
... In the present work, we have found that suppression of the variegating state is a function of the quantity of Y heterochromatin present in the genome at least for[r] ... See full document
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Length Variation of CAG/CAA Trinucleotide Repeats in Natural Populations of Drosophila melanogaster and Its Relation to the Recombination Rate
... In all cases the Cognac population showed the highest sum of ranks across loci (i.e., the fewest number of alleles, see APPENDIX B, and the lowest gene diversity, see[r] ... See full document
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A Reexamination of Spreading of Position-Effect Variegation in the white-roughest Region of Drosophila melanogaster
... 4r differed from 4Ta at the right end, and from 4f at If a rearrangement-linked element affecting the inac- the left. A total of 52–60% of the type I signal was found tivation of rst in w 2 cells is exchanged between 4r ... See full document
14
DIRECT PROOF OF A VARIEGATED-TYPE POSITION EFFECT AT THE WHITE LOCUS IN DROSOPHILA MELANOGASTER
... By taking advantage of a small amount of crossing over between the variegating gene and the break point of the translocation, these workers were able to show in both cases t[r] ... See full document
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POSITION EFFECTS AT THE BROWN LOCUS IN DROSOPHILA MELANOGASTER
... The structural theory has two basic premises, (1) that heterozygosity in chromo- somal structure is equally effective in disturbing the action of the genes on the rearran[r] ... See full document
19
Observations on the induction of position effect variegation of euchromatic genes in Drosophila melanogaster.
... In the T(l;2)d0r""'~ translocation, the 1A-2B7-8 segment of the X chromosome is brought to the vicinity of 2R-chromosome heterochromatin resulting in position effec[r] ... See full document
12
Regena (Rga), a Drosophila Homolog of the Global Negative Transcriptional Regulator CDC36 (NOT2) from Yeast, Modifies Gene Expression and Suppresses Position Effect Variegation
... (Lip) gene of Drosophila melanogaster, a modifier of retroelement expression, position effect variegation and white locus insertion alleles. Bingham,[r] ... See full document
13
Effect of the Suppressor of Underreplication (SuUR) Gene on Position-Effect Variegation Silencing in Drosophila melanogaster
... scope) and photographed with the CCD Olympus DP50. of all bands in pn2b without signs of heterochromatiza- Measurements of position-effect variegation: The extent of tion. Two sites of antibody binding are ... See full document
12
POSITION EFFECTS AT THE HAIRY LOCUS IN DROSOPHILA MELANOGASTER
... Central to the distinction between the two are three basic facts: (1) stability versus variegation in pheno- type, (2) V-type position effects are associated with definite rear[r] ... See full document
21
STUDIES ON THE MECHANISM OF HETEROCHROMATIC POSITION EFFECT AT THE ROSY LOCUS OF DROSOPHILA MELANOGASTER
... to a reduced relative amount of rosy locus DNA. Essentially, this hypothesis argues that, in the polytene fat body or malpighian tubules, the specific rosy locus D[r] ... See full document
13
POSITION-EFFECT VARIEGATION AT SEVERAL CLOSELY LINKED LOCI IN DROSOPHILA MELANOGASTER
... Additional complications arose because the roughest3 phenotype is itself the result of a position effect brought about by a long inversion of the X chromo- some which causes the[r] ... See full document
13
PIGMENTATION IN A MOTTLED WHITE EYE DUE TO POSITION EFFECT IN DROSOPHILA MELANOGASTER
... FIGURE 10.-Mottled white, longitudinal section through ommatidia ; upper arrow shows pigmented post-retinal area underlying unpigmented secondaries ; lower arrow, pig[r] ... See full document
17
Genomic Imprinting and Position-Effect Variegation in Drosophila melanogaster
... 1992 Position-effect variegation: an assay for non- Baker, ...V-type position effects of a gene in Drosophila histone chromosomal proteins and chromatin assembly and mod- virilis normally ... See full document
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The effect of modifiers of position-effect variegation on the variegation of heterochromatic genes of Drosophila melanogaster.
... Rearrangements with breakpoints in the distal- most block of heterochromatin show the strongest variegation of the 2Lh genes (WAKIMOTO and HEARN 1990); in general, these [r] ... See full document
13
A new gene in Drosophila melanogaster, Ravus, the phantom of the modifier of position effect variegation Su(var)3 7
... as position effect variegation (PEV, Spofford, 1976; Weiler and Wakimoto, 1995; Wallrath, ...in Drosophila as mutations that can either increase or reduce the proportion of cells in which ... See full document
5
STUDIES ON THE POSITION EFFECT AT THE CUBITUS INTERRUPTUS LOCUS OF DROSOPHILA MELANOGASTER
... Beginning with a discussion of R(ci)/ci heterozygotes with the T(2R distal; 4 distal) R(ci) alleles, each of the 11 initial indexes for the first tests are negative, that[r] ... See full document
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HISTONE GENE MULTIPLICITY AND POSITION EFFECT VARIEGATION IN DROSOPHILA MELANOGASTER
... Either a reduction in the number of histone templates suppresses the inactivation of variegating loci or a locus exists in the region of the histone gene complex which, when [r] ... See full document
18
A POSSIBLE CASE OF POSITION EFFECT ON DNA REPLICATION IN DROSOPHILA MELANOGASTER
... Auto- radiography of late 3rd instar salivary glands reveals that basal 4R in its distal position in T(3;4)10 still incorporates 3H-thymidine in synchrony with the cent[r] ... See full document
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