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Science
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The Effect of Multifunctionality on the Rate of Evolution in Yeast
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Marcel Salathé, Martin Ackermann and Sebastian Bonhoeffer
Molecular Biology and Evolution,
23 (4), 721-722 ( 2006)
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Abstract
Multifunctional genes are expected to evolve at lower rates because
mutations in such genes that improve one function might often have
deleterious effects on other functions. Here we tested for an association
between multifunctionality and evolutionary rates in genes of
Saccharomyces cerevisiae, and we find a highly significant negative
correlation between the number of biological processes in which a gene
is involved in and its rate of evolution. However, the magnitude of this
effect is small, and the results do not support the notion that
multifunctionality limits a gene's rate of evolution.
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