Drosophila melanogaster
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA261333 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Expression profiling individual DrosDel flies heterozygous for deletions of chromosome 2L in a hybrid background
| PRJNA298537 | ENA
Project description:Transcriptional profiling of Drosophila melanogaster 2nd chromosome substitution lines; Background chromosomes are identical across lines; 2nd chromosomes are different across line and can be homozygous or heterozygous within each line Keywords: Natural variation
2010-05-06 | GSE12191 | GEO
Project description:Chromosomal instability which involves deletion and duplication of chromosomes or chromosome parts is a common feature of cancers, and deficiency screens are commonly used as a method to find genes involved in different biological pathways. Still, how gene expression from whole chromosomes or large chromosomal domains is affected by deficiencies, duplications or chromosome loss is largely unknown. Using expression microarrays of deficiency hemizygotes and a duplication hemizygote we show that expressed genes are significantly buffered when present in a deficiency hemizygote and that the buffering effect is general and not mainly caused by feedback regulation of individual genes. Differentially expressed genes are in general better buffered than ubiquitously expressed genes when present in one copy. When present in three copies, differentially expressed genes are in general less buffered than ubiquitously expressed genes. Furthermore, we show that the 4th chromosome is compensated in response to dose differences. Our results suggest that general mechanisms exist to stimulate and to repress gene expression of aneuploidy regions and on the 4th chromosome this compensation is mediated by POF (Painting of Fourth). Experiment Overall Design: We prepared total RNA from flies heterozygous for three different deletions, Df(2L)J-H, Df (2L)ED4470, Df(2L)ED4651, flies heterozygous for the duplication Dp(2;2)Cam3 and flies with only one chromosome 4, or three copies of the 4th chromosome, as well as from wild type control flies. Three biological replicates of all genotypes were prepared.
2009-04-03 | E-GEOD-14517 | biostudies-arrayexpress
Project description:RNA-Seq of female, male, and sex-transformed Drosophila melanogaster heads from flies heterozygous for deletions on chromosome X and 3L
| PRJNA258556 | ENA
Project description:Y-linked rDNA deletions in Drosophila melanogaster
| PRJNA138155 | ENA
Project description:Transcriptional profiling of zen homozygous and zen heterozygous Drosophila melanogaster embryos
| PRJNA340284 | ENA
Project description:Drosophila melanogaster 2nd chromosome substitution lines
| PRJNA113409 | ENA
Project description:Euchromatic chromatin modifications on chromosome 2L
| PRJNA103149 | ENA
Project description:We performed mRNA transcriptional profiling on 99 hemizygotic lines (Df/+) from the DrosDel project covering 68% of chromosome 2L, in order to understand how changes in gene copy number affect overall transcriptome.
2016-01-31 | GSE61509 | GEO
Project description:Mapping the Drosophila melanogaster centromeric heterochromatin by CGH analysis of embryos lacking specific chromosomes or chromosome arms. Nine chromosome or chromosome arm deletions were tested: embryos lacking the entire second chromosome (2En-), 2L (2L-), 2R (2R-), the entire third chromosome (3En-), 3L (3L-), 3R (3R-), the entire fourth chromosome (4En-), the X chromosome (X-), or both X and Y chromosomes (XY-). Control: Blastoderm stage wild type Oregon R embryos. For each experiment 100-150 embryos of the appropriate genotype were collected. DNA from randomly staged 0-8 hr wild type Oregon R embryos was used as reference for all experiments. Embryos with no X chromosome were obtained by crossing attached-X/Y females (C(1)DX, y f) to X/Y males. Embryos with no X and Y chromosomes were obtained by crossing attached-X/Y females (C(1)RM, y2suwawa) to attached-XY males (YSX YL, In(1)EN, y B). The compound II chromosomes RM(2L); RM(2R)=C(2)v and the compound III chromosomes RM(3L); RM(3R)=C(3)se were used to generate 2L- and 2R-, and 3L- and 3R- embryos, respectively. The compound II C(2)EN and compound III C(3)EN st1 cu1es stocks were used to generate embryos deficient for the entire second and third chromosome, respectively. The compound IV C(4)RM, ci1eyR/0 were used to generate embryos deficient for the fourth chromosome. Embryos deficient for chromosome 4 were identified by their defects in denticle belt patterning during late embryogenesis, whereas embryos deficient for other chromosome/chromosome arm were recognized based on their specific phenotypic defects during early embryonic development. All embryos were collected at room temperature.
2012-03-06 | E-GEOD-36260 | biostudies-arrayexpress