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Laser Microdissection Applied to Gene Expression Profiling of Subset of Cells from the Drosophila Wing Disc
Published on: April 30, 2010
Microarray analysis of replicate populations selected against a wing-shape correlation in Drosophila melanogaster
Kenneth E Weber1, Ralph J Greenspan, David R Chicoine
1Department of Biological Sciences, University of Southern Maine, Portland, Maine 04104-9300, USA. keweber@usm.maine.edu
Genetics
|February 5, 2008
Summary
Researchers studied gene expression changes in fruit flies selected for wing shape. Different gene sets influenced wing shape in distinct populations, highlighting genetic diversity in trait evolution.
Area of Science:
- Evolutionary genetics
- Developmental biology
- Drosophila melanogaster research
Background:
- Phenotypic correlations between traits can evolve.
- Gene expression differences underlie phenotypic variation.
- Understanding genetic architecture of complex traits is crucial.
Purpose of the Study:
- To investigate gene expression changes associated with altered wing dimensions in Drosophila melanogaster.
- To compare genetic responses to selection between different populations.
Main Methods:
- Bidirectional selection was applied to wing dimensions in Drosophila melanogaster.
- Gene expression profiling was performed on wing discs using microarrays.
- Analysis included 12 selected lines from Massachusetts and California populations.
Main Results:
- Consistent significant gene expression differences were observed in Massachusetts lines.
- California lines showed largely different sets of responding loci.
- This disparity indicates population-specific genetic bases for wing shape evolution.
Conclusions:
- Wing shape is influenced by a large number of loci.
- Genetic architecture of selected traits can differ between populations.
- Well-replicated selection experiments can refine candidate gene identification.
