Study of Enhancer Evolution in Drosophila
Author Information
Author(s): Marcellini Sylvain, Simpson Pat
Primary Institution: Department of Zoology, University of Cambridge, Cambridge, United Kingdom
Hypothesis
Changes in cis-regulatory sequences are proposed to underlie much of morphological evolution.
Conclusion
The evolution of the dorsocentral enhancer in Drosophila quadrilineata has resulted in altered bristle formation compared to Drosophila melanogaster.
Supporting Evidence
- The D. quadrilineata enhancer is active in more anterior regions compared to D. melanogaster.
- Transgenic D. melanogaster with the D. quadrilineata enhancer can develop additional bristles.
- The study shows that evolutionary changes in enhancers can lead to significant morphological differences.
Takeaway
Scientists studied how changes in a specific gene enhancer affect the number of bristles on flies, showing that some flies can have more bristles because of these changes.
Methodology
The study involved comparing the activity of enhancers from different Drosophila species and using transgenic techniques to assess their effects on bristle formation.
Limitations
The study does not test the Dq-DCE in D. quadrilineata itself, which may limit the conclusions about its natural function.
Digital Object Identifier (DOI)
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