SYMMETRICAL EXPRESSION. “An increasing number of studies from across angiosperms indicate that morphological shifts between radial symmetry and bilateral symmetry are correlated with independent transitions in asymmetric expression of members of the ECE clade of TCP TFs, of which CYCLOIDEA (CYC) was the first characterized member.” ( TFs = transcription factors).
http://onlinelibrary.wiley.com/doi/10.1111/nph.13198/full