Article
Natural Selection in Virulence Genes of Francisella tularensis.
Journal of molecular evolution - 1 Jun 2016
Gunnell Mark K, Robison Richard A, Adams Byron J
Abstract excerpt
A fundamental tenet of evolution is that alleles that are under negative selection are often deleterious and confer no evolutionary advantage. Negatively selected alleles are removed from the gene pool and are eventually extinguished from the population. Conversely, alleles under positive selection do confer an evolutionary advantage and lead to an increase in the overall fitness of the organism. These alleles...
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