Positive selection and expression divergence following gene duplication in the sunflower CYCLOIDEA gene family.

@article{Chapman2008PositiveSA,
  title={Positive selection and expression divergence following gene duplication in the sunflower CYCLOIDEA gene family.},
  author={Mark A Chapman and James H Leebens-Mack and John M. Burke},
  journal={Molecular biology and evolution},
  year={2008},
  volume={25 7},
  pages={1260-73}
}
Members of the CYCLOIDEA (CYC)/TEOSINTE-BRANCHED1 (TB1) group of transcription factors have been implicated in the evolution of zygomorphic (i.e., bilaterally symmetric) flowers in Antirrhinum and Lotus and the loss of branching phenotype during the domestication of maize. The composite inflorescences of sunflower (Helianthus annuus L. Asteraceae) contain both zygomorphic and actinomorphic (i.e., radially symmetric) florets (rays and disks, respectively), and the cultivated sunflower has… CONTINUE READING
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