Article
Ohno's dilemma: evolution of new genes under continuous selection.
Proceedings of the National Academy of Sciences of the United States of America - 23 Oct 2007
Bergthorsson Ulfar, Andersson Dan I, Roth John R
Abstract excerpt
New genes with novel functions arise by duplication and divergence, but the process poses a problem. After duplication, an extra gene copy must rise to sufficiently high frequency in the population and remain free of common inactivating lesions long enough to acquire the rare mutations that provide a new selectable function. Maintaining a duplicated gene by selection for the original function would restrict the...
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