Gene essentiality and variability: What is the link? A within- and between-species perspective.

Abstract excerpt

A gene is considered essential when its loss of function results in a deleterious phenotype, hugely reducing the organism's viability or fitness. However, the link between the essentiality of a gene and its degree of polymorphism is unclear. In this review, we show that there is a place for a certain degree of variability, even for essential genes. We first study the role of infectious diseases in the prevalence...

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