A transposing forked-duplication with position effect variegation in Drosophila
نویسندگان
چکیده
منابع مشابه
Histone Gene Multiplicity and Position Effect Variegation in DROSOPHILA MELANOGASTER.
The histone genes of wild-type Drosophila melanogaster are reiterated 100-150 times per haploid genome and are located in the segment of chromosome 2 that corresponds to polytene bands 39D2-3 to E1-2. The influence of altered histone gene multiplicity on chromatin structure has been assayed by measuring modification of the gene inactivation associated with position effect variegation in genotyp...
متن کاملRecombinogenic effects of suppressors of position-effect variegation in Drosophila.
Compact chromatin structure, induction of gene silencing in position-effect variegation (PEV), and crossing-over suppression are typical features of heterochromatin. To identify genes affecting crossing-over suppression by heterochromatin we tested PEV suppressor mutations for their effects on crossing over in pericentromeric regions of Drosophila autosomes. From the 46 mutations (28 loci) stud...
متن کاملGenomic imprinting and position-effect variegation in Drosophila melanogaster.
Genomic imprinting is a phenomenon in which the expression of a gene or chromosomal region depends on the sex of the individual transmitting it. The term imprinting was first coined to describe parent-specific chromosome behavior in the dipteran insect Sciara and has since been described in many organisms, including other insects, plants, fish, and mammals. In this article we describe a mini-X ...
متن کاملSingle-locus modification of position-effect variegation in Drosophila melanogaster. I. White variegation.
mechanism of position-eff ect variegation has been and remains a fasciT?ating puzzle, tan talizing the student of the genetics of somewhat higher organisms with the hope that here is a clue to the riddle of the sequential shifts of control during development. This view is elaborated in BAKER’S (1963) able review of his own and his colleagues’ work. One of the more refractory aspects of the puzz...
متن کاملThe effect of modifiers of position-effect variegation on the variegation of heterochromatic genes of Drosophila melanogaster.
Dominant modifiers of position-effect variegation of Drosophila melanogaster were tested for their effects on the variegation of genes normally located in heterochromatin. These modifiers were previously isolated as strong suppressors of the variegation of euchromatic genes and have been postulated to encode structural components of heterochromatin or other products that influence chromosome co...
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ژورنال
عنوان ژورنال: Genetical Research
سال: 1980
ISSN: 0016-6723,1469-5073
DOI: 10.1017/s0016672300019650