Essential gene disruptions reveal complex relationships between phenotypic robustness, pleiotropy, and fitness.

Abstract excerpt

The concept of robustness in biology has gained much attention recently, but a mechanistic understanding of how genetic networks regulate phenotypic variation has remained elusive. One approach to understand the genetic architecture of variability has been to analyze dispensable gene deletions in model organisms; however, the most important genes cannot be deleted. Here, we have utilized two systems in yeast...

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