%0 Journal Article %T Positive Selection and Expression Divergence Following Gene Duplication in the Sunflower CYCLOIDEA Gene Family %A Chapman, Mark A. %A Leebens-Mack, James H. %A Burke, John M. %J Molecular Biology and Evolution %V 25 %N 7 %P 1260-1273 %@ 0737-4038 %D 2008-04-03 %I Oxford University Press %~ DeepDyve