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Nature 428, 847-850 (22 April 2004) | doi:10.1038/nature02489;
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Molecular Biologists and Biochemists
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Genetic changes associated with floral adaptation restrict future evolutionary potential
A commonly accepted evolutionary principle is that adaptive change constrains the potential directions of future evolutionary change. One manifestation of this is Dollo's law, which states that character elimination is irreversible.
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