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Interactions between FUSED and ENGRAILED, Two Mutations Affecting Pattern Formation in DROSOPHILA MELANOGASTER
A Fausto-Sterling1, H Smith-Schiess
1Brown University, Division of Biology and Medicine, Providence, R.I. 02912.
The combination of the fused (fu) and engrailed (en) mutations in Drosophila melanogaster significantly enhances the engrailed phenotype. This gene interaction leads to increased setae in sex combs and more severe wing abnormalities, highlighting developmental gene interactions.
Area of Science:
- Developmental Biology
- Genetics
- Drosophila melanogaster research
Background:
- The engrailed gene is crucial for segment polarity in Drosophila.
- X-linked mutations can influence developmental phenotypes.
Purpose of the Study:
- To investigate the interaction between the fused and engrailed genes.
- To quantify the phenotypic effects of combining fu and en mutations.
Main Methods:
- Comparative analysis of Drosophila melanogaster phenotypes.
- Examination of bristle and wing morphology in mutant lines.
Main Results:
- Combined fu;en mutation exacerbates the engrailed phenotype.
- Increased setae in secondary sex combs (2-4x).
- Reduced metathoracic leg bristle rows (1.5-2x) and increased abnormalities in fu;en flies.
Conclusions:
- The fused gene significantly modifies the engrailed phenotype.
- This interaction provides insights into gene regulatory networks controlling development.
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