Project description:Sex differences in gene expression throughout development are poorly understood, especially sex-specific expression of micro RNAs. However these patterns of gene expression could have important implications in our understanding of the underlying mechanics of sex differentiation and sexual conflict. We extract mRNA and miRNA from male and female Drosophila melanogaster from three developmental timepoints, third larval instar, pupae and adults, and examine gene expression using microarrays. We found a large number of sex-biased mRNA transcripts at each stage of development, whereas sex-biased miRNA expression was low in larvae and pupae and more prevalent in adults.
Project description:Sex differences in gene expression throughout development are poorly understood, especially sex-specific expression of micro RNAs. However these patterns of gene expression could have important implications in our understanding of the underlying mechanics of sex differentiation and sexual conflict. We extract mRNA and miRNA from male and female Drosophila melanogaster from three developmental timepoints, third larval instar, pupae and adults, and examine gene expression using microarrays. We found a large number of sex-biased mRNA transcripts at each stage of development, whereas sex-biased miRNA expression was low in larvae and pupae and more prevalent in adults.
Project description:Sex differences in gene expression throughout development are poorly understood, especially sex-specific expression of micro RNAs. However these patterns of gene expression could have important implications in our understanding of the underlying mechanics of sex differentiation and sexual conflict. We extract mRNA and miRNA from male and female Drosophila melanogaster from three developmental timepoints, third larval instar, pupae and adults, and examine gene expression using microarrays. We found a large number of sex-biased mRNA transcripts at each stage of development, whereas sex-biased miRNA expression was low in larvae and pupae and more prevalent in adults. We isolated 2 biological replicates of each sex at each of the three developmental timepoints and extracted mRNA and miRNA from each sample, creating 12 samples of each type of RNA which were ran on GeneChip Drosophila Genome 2.0 Affymetrix microarrays to examine mRNA expression, and GeneChip miRNA 3.0 Affymetrix microarrays to examine miRNA expression.
Project description:Sex differences in gene expression throughout development are poorly understood, especially sex-specific expression of micro RNAs. However these patterns of gene expression could have important implications in our understanding of the underlying mechanics of sex differentiation and sexual conflict. We extract mRNA and miRNA from male and female Drosophila melanogaster from three developmental timepoints, third larval instar, pupae and adults, and examine gene expression using microarrays. We found a large number of sex-biased mRNA transcripts at each stage of development, whereas sex-biased miRNA expression was low in larvae and pupae and more prevalent in adults. We isolated 2 biological replicates of each sex at each of the three developmental timepoints and extracted mRNA and miRNA from each sample, creating 12 samples of each type of RNA which were ran on GeneChip Drosophila Genome 2.0 Affymetrix microarrays to examine mRNA expression, and GeneChip miRNA 3.0 Affymetrix microarrays to examine miRNA expression.
Project description:RNA from six developmental stages during the Drosophila life cycle (0-2hr embryos, 3-16hr embryos, larvae, pupae, male and female adults) was isolated, reverse transcribed in the presence of oligodT and random hexamers and the labeled cDNA was hybridized to these arrays.Each sample was hybridized four times, twice with Cy5 labeling and twice with Cy3 labeling. Keywords: other
Project description:In Hymenoptera, sex is determined by a single-locus complementary sex determining system (sl-CSD). Males are normally haploid (hemizygous at the sl-CSD locus) but if the genotype of the sl-CSD locus is homozygous, they develop into diploid males. Here, we study the effects of ploidy and the sl-CSD-locus genotype by comparing gene expression differences between haploid males, diploid males and virgin queens at three developmental stages, pupae, 1 day and 11 days after eclosion. Keywords: diploid males, sl-CSD, ploidy-spcific gene, sex-specific gene, doublesex, sex-biased gene Six-condition experiment: haploid male pupae, diploid male pupae, queen pupae, 1-day-old haploid male adults, 1-day-old diploid male adults, 1-day-old queen adults (accession number GSM1031732 - GSM1031734, GSM1031737 - GSM1031738, GSM1031740 - GSM1031742, GSM1031745 - GSM1031746; reprocessed for this study), 11-day-old haploid male adults, 11-day-old diploid male adults, 11-day-old queen adults (accession number GSM1031748 - GSM1031750, GSM1031753 - GSM1031754, GSM1031756 - GSM1031758, GSM1031761 - GSM1031762; reprocessed for this study). Biological replicates: 5 colonies (x 2 genotypes for each colony). Samples were labeled with Cy3 and were compared to the same common reference RNA labeled with Cy5.
Project description:In Hymenoptera, sex is determined by a single-locus complementary sex determining system (sl-CSD). Males are normally haploid (hemizygous at the sl-CSD locus) but if the genotype of the sl-CSD locus is homozygous, they develop into diploid males. Here, we study the effects of ploidy and the sl-CSD-locus genotype by comparing gene expression differences between haploid males, diploid males and virgin queens at three developmental stages, pupae, 1 day and 11 days after eclosion. Keywords: diploid males, sl-CSD, ploidy-spcific gene, sex-specific gene, doublesex, sex-biased gene Six-condition experiment: haploid male pupae, diploid male pupae, queen pupae, 1-day-old haploid male adults, 1-day-old diploid male adults, 1-day-old queen adults (accession number GSM1031732 - GSM1031734, GSM1031737 - GSM1031738, GSM1031740 - GSM1031742, GSM1031745 - GSM1031746; reprocessed for this study), 11-day-old haploid male adults, 11-day-old diploid male adults, 11-day-old queen adults (accession number GSM1031748 - GSM1031750, GSM1031753 - GSM1031754, GSM1031756 - GSM1031758, GSM1031761 - GSM1031762; reprocessed for this study). Biological replicates: 5 colonies (x 2 genotypes for each colony). Samples were labeled with Cy3 and were compared to the same common reference RNA labeled with Cy5.
Project description:In Hymenoptera, sex is determined by a single-locus complementary sex determining system (sl-CSD). Males are normally haploid (hemizygous at the sl-CSD locus) but if the genotype of the sl-CSD locus is homozygous, they develop into diploid males. Here, we study the effects of ploidy and the sl-CSD-locus genotype by comparing gene expression differences between haploid males, diploid males and virgin queens at three developmental stages, pupae, 1 day and 11 days after eclosion. Keywords: diploid males, sl-CSD, ploidy-spcific gene, sex-specific gene, doublesex, sex-biased gene Six-condition experiment: haploid male pupae, diploid male pupae, queen pupae, 1-day-old haploid male adults, 1-day-old diploid male adults, 1-day-old queen adults (accession number GSM1031732 - GSM1031734, GSM1031737 - GSM1031738, GSM1031740 - GSM1031742, GSM1031745 - GSM1031746; reprocessed for this study), 11-day-old haploid male adults, 11-day-old diploid male adults, 11-day-old queen adults (accession number GSM1031748 - GSM1031750, GSM1031753 - GSM1031754, GSM1031756 - GSM1031758, GSM1031761 - GSM1031762; reprocessed for this study). Biological replicates: 5 colonies (x 2 genotypes for each colony). Samples were labeled with Cy3 and were compared to the same common reference RNA labeled with Cy5.