“…in Antirrhinum, two CYC2 paralogs, CYC (luo et al, 1996) and DICHOTOMA (DICH;luo et al, 1999), establish dorsal floral organ identity and number. Functional studies also support the implication of these genes in the control of dorsal petal shape (Feng et al, 2006;Busch and Zachgo, 2007;Wang et al, 2008;Wang et al, 2010;Xu et al, 2013, reviewed in Hileman, 2014aand Hileman, 2014b. in the closely related Linaria vulgaris, silencing of LvCYC is sufficient to generate fully radially symmetrical flowers although organ number is not altered (Figure 16.4a;Cubas et al, 1999).…”