[Frontiers in Bioscience 13, 4373-4378, May 1, 2008]

Evolutionary constraints imposed by gene dosage balance

Han Liang1, Ariel Fernandez2

1Department of Ecology and Evolution, University of Chicago, IL, 60637, USA, 2Department of Bioengineering, Rice University, Houston, TX, 77005, USA, Department of Computer Science, University of Chicago, Chicago, IL, 60637, USA

TABLE OF CONTENTS

1. Abstract
2. Introduction
3. Gene dosage imbalance as a basis of genetic dominance
4. The impact of gene dosage balance on gene duplicability
5. Perspective
6. Acknowledgements
7. References

1. ABSTRACT

The gene dosage balance hypothesis states that a concentration imbalance among components of macromolecules is often deleterious. Thus this notion potentially provides a mechanistic explanation for understanding genetic dominance and gene duplicability. Accumulating evidence emerged from recent genomic data has strongly supported this hypothesis. Further efforts are needed to understand dosage sensitivity in the context of organismal complexity and co-regulation of genes under dosage-balance constraints.